256016475 has 144 divisors (see below), whose sum is σ = 551110560. Its totient is φ = 111974400.

The previous prime is 256016443. The next prime is 256016489. The reversal of 256016475 is 574610652.

It is a happy number.

256016475 is a `hidden beast` number, since 2 + 5 + 6 + 0 + 1 + 647 + 5 = 666.

It is not a de Polignac number, because 256016475 - 2⁵ = 256016443 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 2348721 + ... + 2348829.

Almost surely, 2^256016475 is an apocalyptic number.

256016475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

256016475 is an abundant number, since it is smaller than the sum of its proper divisors (295094085).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

256016475 is a wasteful number, since it uses less digits than its factorization.

256016475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222 (or 214 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 256016475 is about 16000.5148354670. The cubic root of 256016475 is about 634.9740415536.

The spelling of 256016475 in words is "two hundred fifty-six million, sixteen thousand, four hundred seventy-five".