256562355 has 96 divisors (see below), whose sum is σ = 509644800. Its totient is φ = 107838720.

The previous prime is 256562323. The next prime is 256562389. The reversal of 256562355 is 553265652.

It is not a de Polignac number, because 256562355 - 2⁵ = 256562323 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1721821 + ... + 1721969.

It is an arithmetic number, because the mean of its divisors is an integer number (5308800).

Almost surely, 2^256562355 is an apocalyptic number.

256562355 is a deficient number, since it is larger than the sum of its proper divisors (253082445).

256562355 is a wasteful number, since it uses less digits than its factorization.

256562355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241 (or 218 counting only the distinct ones).

The product of its digits is 270000, while the sum is 39.

The square root of 256562355 is about 16017.5639533607. The cubic root of 256562355 is about 635.4250197785.

The spelling of 256562355 in words is "two hundred fifty-six million, five hundred sixty-two thousand, three hundred fifty-five".