Q: Is 1,665,125 a Prime Number?
A: No, 1,665,125 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 1665125 can be evenly divided by 1 5 7 11 25 35 55 77 125 173 175 275 385 865 875 1,211 1,375 1,903 1,925 4,325 6,055 9,515 9,625 13,321 21,625 30,275 47,575 66,605 151,375 237,875 333,025 and 1,665,125, with no remainder.
Since 1,665,125 cannot be divided by just 1 and 1,665,125, it is not a prime number.