Q: Is 25,157,025 a Prime Number?

 A: No, 25,157,025 is not a prime number.

Why is 25,157,025 not a prime number?

A prime number is a natural number, greater than one, that can only be divided by 1 and itself.

The number 25157025 can be evenly divided by 1 3 5 9 15 17 25 45 51 75 85 153 225 255 425 765 1,275 3,825 6,577 19,731 32,885 59,193 98,655 111,809 164,425 295,965 335,427 493,275 559,045 1,006,281 1,479,825 1,677,135 2,795,225 5,031,405 8,385,675 and 25,157,025, with no remainder.

Since 25,157,025 cannot be divided by just 1 and 25,157,025, it is not a prime number.


More Examples

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

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