256755105 has 24 divisors (see below), whose sum is σ = 450410688. Its totient is φ = 135284256.

The previous prime is 256755091. The next prime is 256755127. The reversal of 256755105 is 501557652.

It is a happy number.

It is not a de Polignac number, because 256755105 - 2⁵ = 256755073 is a prime.

It is a super-2 number, since 2×256755105² = 131846367887122050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 256755105.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30637 + ... + 38106.

It is an arithmetic number, because the mean of its divisors is an integer number (18767112).

Almost surely, 2^256755105 is an apocalyptic number.

It is an amenable number.

256755105 is a deficient number, since it is larger than the sum of its proper divisors (193655583).

256755105 is a wasteful number, since it uses less digits than its factorization.

256755105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68837 (or 68834 counting only the distinct ones).

The product of its (nonzero) digits is 52500, while the sum is 36.

The square root of 256755105 is about 16023.5796562441. The cubic root of 256755105 is about 635.5841071780.

The spelling of 256755105 in words is "two hundred fifty-six million, seven hundred fifty-five thousand, one hundred five".