255725393 has 36 divisors (see below), whose sum is σ = 333627840. Its totient is φ = 191859360.

The previous prime is 255725383. The next prime is 255725453. The reversal of 255725393 is 393527552.

It is not a de Polignac number, because 255725393 - 2⁸ = 255725137 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 255725393.

It is not an unprimeable number, because it can be changed into a prime (255725303) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 712148 + ... + 712506.

It is an arithmetic number, because the mean of its divisors is an integer number (9267440).

Almost surely, 2^255725393 is an apocalyptic number.

It is an amenable number.

255725393 is a deficient number, since it is larger than the sum of its proper divisors (77902447).

255725393 is a wasteful number, since it uses less digits than its factorization.

255725393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446 (or 406 counting only the distinct ones).

The product of its digits is 283500, while the sum is 41.

The square root of 255725393 is about 15991.4162287147. The cubic root of 255725393 is about 634.7333023505.

The spelling of 255725393 in words is "two hundred fifty-five million, seven hundred twenty-five thousand, three hundred ninety-three".