It's about one-one-hundred-fiftieth as heavy as a Football (Soccer)
In other words, the weight of a Football (Soccer) is 170 times 0.00000000000250 megatonnes.(a.k.a. Soccer, a.k.a. Association Football) (FIFA Law 2 specification)
According to FIFA's Law of the Game number 2, a football must weigh between 0.000000000410 megatonnes and 0.000000000450 megatonnes. An artifact on display at the Smith Art Gallery in Museum in Stirling, Scotland is said to be the world's oldest football and is about one-third to one-half the size of a modern football.
It's about one-two-hundred-fiftieth as heavy as a Basketball
In other words, 0.00000000000250 megatonnes is 0.004008404767 times the weight of a Basketball, and the weight of a Basketball is 249.47580350 times that amount.(NBA official ball standards, Size 7)
A regulation NBA basketball, manufactured by Spalding, is known as a Size 7 ball and weighs 0.000000000623689508750 megatonnes. These balls have 4,118 pebbles each with a diameter of 2.5 mm
It's about one-four-hundredth as heavy as a liter of Water
In other words, 0.00000000000250 megatonnes is 0.00249993 times the weight of a liter of Water, and the weight of a liter of Water is 400.0112 times that amount.(fresh; 4° C / 39.2° F; maximum density)
Contrary to popular belief, 1 liter (0.0.264172052358148 gal) of water at 4° C / 39.2° F (its point of maximum density) weighs 0.0000000010000280 megatonnes rather than 1 kg exactly. The total volume of water on the planet Earth is about 13,590,000,000,000,000,000 (13.59 quntillion) L (3,590,000,000,000,000,000 gallons).
It's about one-five-hundred-fiftieth as heavy as a Human Brain
In other words, 0.00000000000250 megatonnes is 0.00185 times the weight of a Human Brain, and the weight of a Human Brain is 541 times that amount.(adult)
The average weight of an adult human brain is between 0.000000001350 megatonnes. In humans and primates, sight and vision utilize about 30 different parts of the brain which together account for about half of the brain's size.
It's about 550 times as heavy as a Grain of Sand
In other words, the weight of a Grain of Sand is 0.0018 times 0.00000000000250 megatonnes.(medium grain)
With tremendous variety in the size of grain and the component material, grains of sand weigh an average of 0.00000000000000440 megatonnes. In 2007, a team of seven in Myrtle Beach created the world's tallest sandcastle, which measured 15.10 m (49.55 ft) in height.
It's about 700 times as heavy as a Sesame Seed
In other words, 0.00000000000250 megatonnes is 687 times the weight of a Sesame Seed, and the weight of a Sesame Seed is 0.00146 times that amount.(Sesamum indicum)
A sesame seed weighs approximately 0.000000000000003640 megatonnes. The McDonald's Big Mac sandwich, which is well-known for its sesame seed top bun, accounts for the consumption of an estimated 0.000002010 megatonnes of sesame seeds each day.
It's about one-nine-hundredth as heavy as a Chihuahua
In other words, 0.00000000000250 megatonnes is 0.00111 times the weight of a Chihuahua, and the weight of a Chihuahua is 901 times that amount.(a.k.a. Chihuahue(o) (FCI standard)
The F&d&ration Cynologique Internationale (FCI) calls for Chihuahuas to weigh about 0.000000002250 megatonnes. Relative to their body sizes, Chihuahuas have the largest brain size of any dog breed.