256628675 has 12 divisors (see below), whose sum is σ = 319495176. Its totient is φ = 204480000.

The previous prime is 256628663. The next prime is 256628677. The reversal of 256628675 is 576826652.

It is not a de Polignac number, because 256628675 - 2¹² = 256624579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256628677) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14174 + ... + 26723.

It is an arithmetic number, because the mean of its divisors is an integer number (26624598).

Almost surely, 2^256628675 is an apocalyptic number.

256628675 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

256628675 is a deficient number, since it is larger than the sum of its proper divisors (62866501).

256628675 is a wasteful number, since it uses less digits than its factorization.

256628675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41158 (or 41153 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 47.

The square root of 256628675 is about 16019.6340470062. The cubic root of 256628675 is about 635.4797663874.

The spelling of 256628675 in words is "two hundred fifty-six million, six hundred twenty-eight thousand, six hundred seventy-five".