Q: Is 25,840 a Prime Number?
A: No, 25,840 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 25840 can be evenly divided by 1 2 4 5 8 10 16 17 19 20 34 38 40 68 76 80 85 95 136 152 170 190 272 304 323 340 380 646 680 760 1,292 1,360 1,520 1,615 2,584 3,230 5,168 6,460 12,920 and 25,840, with no remainder.
Since 25,840 cannot be divided by just 1 and 25,840, it is not a prime number.