Q: Is 25,505,025 a Composite Number?

Why is 25,505,025 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 25,505,025 can be evenly divided by 1 3 5 7 13 15 21 25 35 37 39 65 75 91 101 105 111 175 185 195 259 273 303 325 455 481 505 525 555 707 777 925 975 1,295 1,313 1,365 1,443 1,515 2,121 2,275 2,405 2,525 2,775 3,367 3,535 3,737 3,885 3,939 6,475 6,565 6,825 7,215 7,575 9,191 10,101 10,605 11,211 12,025 16,835 17,675 18,685 19,425 19,695 26,159 27,573 32,825 36,075 45,955 48,581 50,505 53,025 56,055 78,477 84,175 93,425 98,475 130,795 137,865 145,743 229,775 242,905 252,525 280,275 340,067 392,385 653,975 689,325 728,715 1,020,201 1,214,525 1,700,335 1,961,925 3,643,575 5,101,005 8,501,675 and 25,505,025, with no remainder.

Since 25,505,025 cannot be divided by just 1 and 25,505,025, 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).