256318475 has 24 divisors (see below), whose sum is σ = 365170080. Its totient is φ = 174827520.

The previous prime is 256318457. The next prime is 256318519. The reversal of 256318475 is 574813652.

256318475 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 256318475 - 2⁸ = 256318219 is a prime.

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, 29981 + ... + 37569.

It is an arithmetic number, because the mean of its divisors is an integer number (15215420).

Almost surely, 2^256318475 is an apocalyptic number.

256318475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

256318475 is a deficient number, since it is larger than the sum of its proper divisors (108851605).

256318475 is a wasteful number, since it uses less digits than its factorization.

256318475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7799 (or 7794 counting only the distinct ones).

The product of its digits is 201600, while the sum is 41.

The square root of 256318475 is about 16009.9492503880. The cubic root of 256318475 is about 635.2236176903.

The spelling of 256318475 in words is "two hundred fifty-six million, three hundred eighteen thousand, four hundred seventy-five".