256445075 has 12 divisors (see below), whose sum is σ = 319004880. Its totient is φ = 204502560.

The previous prime is 256445053. The next prime is 256445089. The reversal of 256445075 is 570544652.

It is not a de Polignac number, because 256445075 - 2¹² = 256440979 is a prime.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8255 + ... + 24104.

It is an arithmetic number, because the mean of its divisors is an integer number (26583740).

Almost surely, 2^256445075 is an apocalyptic number.

256445075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

256445075 is a deficient number, since it is larger than the sum of its proper divisors (62559805).

256445075 is a wasteful number, since it uses less digits than its factorization.

256445075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32686 (or 32681 counting only the distinct ones).

The product of its (nonzero) digits is 168000, while the sum is 38.

The square root of 256445075 is about 16013.9025537188. The cubic root of 256445075 is about 635.3281830147.

The spelling of 256445075 in words is "two hundred fifty-six million, four hundred forty-five thousand, seventy-five".