Q: Is 25,721 a Prime Number?
A: No, 25,721 is 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 25721 can be evenly divided by 1 17 89 289 1,513 and 25,721, with no remainder.
Since 25,721 cannot be divided by just 1 and 25,721, it is not a prime number.