Q: Is 25,251,525 a Composite Number?

Why is 25,251,525 a composite number?

A composite number is a number that can be divided evenly by more numbers than 1 and itself. It is the opposite of a prime number.

The number 25,251,525 can be evenly divided by 1 3 5 9 13 15 25 39 45 65 75 89 97 117 195 225 267 291 325 445 485 585 801 873 975 1,157 1,261 1,335 1,455 2,225 2,425 2,925 3,471 3,783 4,005 4,365 5,785 6,305 6,675 7,275 8,633 10,413 11,349 17,355 18,915 20,025 21,825 25,899 28,925 31,525 43,165 52,065 56,745 77,697 86,775 94,575 112,229 129,495 215,825 260,325 283,725 336,687 388,485 561,145 647,475 1,010,061 1,683,435 1,942,425 2,805,725 5,050,305 8,417,175 and 25,251,525, with no remainder.

Since 25,251,525 cannot be divided by just 1 and 25,251,525, it is a composite number.

More Examples

• All positive natural numbers are either a prime number or a composite number (except the number 1, which is neither).