Q: Is 25,425 a Prime Number?

A: No, 25,425 is not a prime number.

Why is 25,425 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 25425 can be evenly divided by 1 3 5 9 15 25 45 75 113 225 339 565 1,017 1,695 2,825 5,085 8,475 and 25,425, with no remainder.

Since 25,425 cannot be divided by just 1 and 25,425, it is not a prime number.

Number	25,423	25,424	25,426	25,427
Prime?	yes	no	no	no

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

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