256474475 has 24 divisors (see below), whose sum is σ = 331385040. Its totient is φ = 196736000.

The previous prime is 256474457. The next prime is 256474481. The reversal of 256474475 is 574474652.

It is a happy number.

It is not a de Polignac number, because 256474475 - 2²⁰ = 255425899 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, 58355 + ... + 62595.

It is an arithmetic number, because the mean of its divisors is an integer number (13807710).

Almost surely, 2^256474475 is an apocalyptic number.

256474475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

256474475 is a deficient number, since it is larger than the sum of its proper divisors (74910565).

256474475 is a wasteful number, since it uses less digits than its factorization.

256474475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4351 (or 4346 counting only the distinct ones).

The product of its digits is 940800, while the sum is 44.

The square root of 256474475 is about 16014.8204797931. The cubic root of 256474475 is about 635.3524610332.

The spelling of 256474475 in words is "two hundred fifty-six million, four hundred seventy-four thousand, four hundred seventy-five".