255398975 has 48 divisors (see below), whose sum is σ = 356623008. Its totient is φ = 180195840.

The previous prime is 255398959. The next prime is 255399019. The reversal of 255398975 is 579893552.

It is not a de Polignac number, because 255398975 - 2⁴ = 255398959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 805517 + ... + 805833.

It is an arithmetic number, because the mean of its divisors is an integer number (7429646).

Almost surely, 2^255398975 is an apocalyptic number.

255398975 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

255398975 is a deficient number, since it is larger than the sum of its proper divisors (101224033).

255398975 is a wasteful number, since it uses less digits than its factorization.

255398975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444 (or 439 counting only the distinct ones).

The product of its digits is 3402000, while the sum is 53.

The square root of 255398975 is about 15981.2069318935. The cubic root of 255398975 is about 634.4631211355.

The spelling of 255398975 in words is "two hundred fifty-five million, three hundred ninety-eight thousand, nine hundred seventy-five".