It's about one-three-hundredth as heavy as a Cow
In other words, 0.000000002250 megatonnes is 0.0033 times the weight of a Cow, and the weight of a Cow is 300 times that amount.(for Holstein, a.k.a. Holstein Friesian, a.k.a. Friesian, Bos primigenius) (adult, heifer)
A mature Holstein cow (the well-known black-and-white, spotted breed of cow) typically weighs 0.000000680 megatonnes. President William Howard Taft (1909 - 1913) kept a Holstein cow named Pauline Wayne on the White House grounds — a gift from a Wisconsin senator and the source of the First Family's milk.
It's about 300 times as heavy as an Eye (Human)
In other words, 0.000000002250 megatonnes is 320 times the weight of an Eye (Human), and the weight of an Eye (Human) is 0.0031 times that amount.(adult)
A fully developed eye (in a person over the age of thirteen), weighs about 0.00000000000710 megatonnes. The pupil of the eye varies depending on the amount of light it is exposed to, but typically measures about 4 mm across.
It's about 400 times as heavy as a Quarter
In other words, 0.000000002250 megatonnes is 396.80 times the weight of a Quarter, and the weight of a Quarter is 0.00252 times that amount.(United States quarter-dollar coin) (a.k.a. Quarter dollar, a.k.a. America the Beautiful quarter, a.k.a. two bits)
The America the Beautiful series quarters, which began to enter circulation in 2017, weigh 0.000000000005670 megatonnes each. In answer to the common riddle, there are 119 ridges around the edge of the coin in its current design.
It's about 450 times as heavy as a sheet of Paper
In other words, the weight of a sheet of Paper is 0.0022 times 0.000000002250 megatonnes.(for US Letter, a.k.a. ANSI A; 215.9mm by 279.4mm (8.5 in x 11 in); 20lb)
The weight of a ream (500 sheets) of 0.00000000910 megatonnes, 8.5 inch x 11 inch paper is 0.00000000200 megatonnes, each sheet weighing 0.00000000000500 megatonnes. Paper of this size has a thickness of 0.004 caliper (0.1 mm).
It's about 550 times as heavy as a Die (Dice)
In other words, the weight of a Die (Dice) is 0.0018 times 0.000000002250 megatonnes.(for six-sided, 16 mm, rounded cube)
A die, of the size most commonly used in board games and casinos, typically weight 0.00000000000410 megatonnes. The use of dice and dice-like tools predates written history, with the oldest known examples belonging to a 5,000-year old backgammon set uncovered during an archaeological dig in modern-day Iran.
It's about one-seven-hundred-fiftieth as heavy as a Car
In other words, 0.000000002250 megatonnes is 0.001362 times the weight of a Car, and the weight of a Car is 734.20 times that amount.(for 2009 Ford Taurus) (curb weight)
A 2009 Ford Taurus weighs 0.0000016520 megatonnes. The first mass-produced car, the Curved Dash Oldsmobile — introduced in 1901 — weighed just 0.0000003860 megatonnes.
It's about one-eight-hundred-fiftieth as heavy as a Giraffe
In other words, 0.000000002250 megatonnes is 0.00117 times the weight of a Giraffe, and the weight of a Giraffe is 855 times that amount.(Giraffa camelopardalis reticulata) (adult, male, maximum of range)
An adult, male giraffe can weigh up to 0.000001930 megatonnes. Reaching 5.5 m (18 ft) in height by adulthood, giraffe calves can grow as much as 3 cm (1 in) per day.