Q: Is 25,428 a Prime Number?
A: No, 25,428 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 25428 can be evenly divided by 1 2 3 4 6 12 13 26 39 52 78 156 163 326 489 652 978 1,956 2,119 4,238 6,357 8,476 12,714 and 25,428, with no remainder.
Since 25,428 cannot be divided by just 1 and 25,428, it is not a prime number.