It's about one-two-thousand-five-hundredth as heavy as an Elephant
In other words, the weight of an Elephant is 2,700 times 0.000000002250 megatonnes.(for African bush elephant, Loxodonta africana) (Adult, bull)
A bull African bush elephant weighs about 0.00000610 megatonnes. Among African elephants, both males and females have tusks (whereas female Asian elephants, Elephas maximus, do not have tusks) which can grow to 3 m (10 ft) and typically weigh about 0.00000400 megatonnes
It's about 3,000 times as heavy as a Nail
In other words, 0.000000002250 megatonnes is 2,800 times the weight of a Nail, and the weight of a Nail is 0.00036 times that amount.(for 15-gauge, 2-inch, finishing nails)
A two-inch finishing nail weighs 0.000000000000790 megatonnes. Nails have been in use for more than 5,400 years and were ven used as a medium of exchange in ancient times.
It's about one-three-thousandth as heavy as a Tyrannosaurus rex
In other words, 0.000000002250 megatonnes is 0.00035 times the weight of a Tyrannosaurus rex, and the weight of a Tyrannosaurus rex is 2,900 times that amount.(for FMNH PR2081, a.k.a. "Sue") (a.k.a. Tyrannosaurus, a.k.a. T-Rex) (estimated live weight)
The notable Tyrannosaurus specimen housed at the Field Museum of Natural History in Chicago, Illinois, "Sue," is estimated to have weighed about 0.00000640 megatonnes while alive. A renowned predator in popular culture, the teeth of tyrannosaurus rex were up to 33.02 cm (13 in) long.
It's about one-five-thousandth as heavy as an Anchor of a Cruise Ship
In other words, 0.000000002250 megatonnes is 0.000199 times the weight of an Anchor of a Cruise Ship, and the weight of an Anchor of a Cruise Ship is 5,030 times that amount.(for QE2 forward anchor, a.k.a. RMS Queen Elizabeth 2)
Each of the forward anchors of the RMS Queen Elizabeth 2 weighs 0.00001130 megatonnes. The anchor of the QE2 now sits in front of the Holyrood Church in Southampton, England, United Kingdom, along a pedestrian tourist route known as "the QE2 mile."
It's about 10,000 times as heavy as a Raindrop
In other words, the weight of a Raindrop is 0.0001 times 0.000000002250 megatonnes.(a.k.a. drop, a.k.a. droplet) (average)
The weight of a raindrop depends heavily on the type of weather, but averages about 0.000000000000200 megatonnes. The familiar teardrop shape of a raindrop is actually an optical illusion, caused by the reflection of the light and the motion of the drop.
It's about one-thirty-thousandth as heavy as The Space Shuttle
In other words, the weight of The Space Shuttle is 31,000 times 0.000000002250 megatonnes.(for Endeavour, a.k.a. OV-105, a.k.a. Orbiter Vehicle-105) (empty weight, excluding main engines)
When empty, the space shuttle Endeavour weighs 0.0000710 megatonnes. The shuttle's spacious cargo bay carried the Chandra X-ray Observatory into orbit in 1999 — a payload that weighed 0.0000200 megatonnes.
It's about one-forty-five-thousandth as heavy as a Blue Whale
In other words, the weight of a Blue Whale is 46,500 times 0.000000002250 megatonnes.(Balaenoptera musculus)
Blue whales weigh between 0.000105 megatonnes. The largest mammal to have ever lived, blue whales feed almost exclusively on krill — tiny invertebrates weighing about 0.000000000001000 megatonnes each.