Q: Is 685,625 a Prime Number?

A: No, 685,625 is not a prime number.

Why is 685,625 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 685625 can be evenly divided by 1 5 25 125 625 1,097 5,485 27,425 137,125 and 685,625, with no remainder.

Since 685,625 cannot be divided by just 1 and 685,625, it is not a prime number.

Number	685,623	685,624	685,626	685,627
Prime?	no	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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