256612455 has 40 divisors (see below), whose sum is σ = 501828624. Its totient is φ = 124416000.

The previous prime is 256612439. The next prime is 256612483. The reversal of 256612455 is 554216652.

It is not a de Polignac number, because 256612455 - 2⁴ = 256612439 is a prime.

It is a super-2 number, since 2×256612455² = 131699904122254050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 24346 + ... + 33255.

Almost surely, 2^256612455 is an apocalyptic number.

256612455 is a deficient number, since it is larger than the sum of its proper divisors (245216169).

256612455 is a wasteful number, since it uses less digits than its factorization.

256612455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57629 (or 57620 counting only the distinct ones).

The product of its digits is 72000, while the sum is 36.

The square root of 256612455 is about 16019.1277852447. The cubic root of 256612455 is about 635.4663777836.

The spelling of 256612455 in words is "two hundred fifty-six million, six hundred twelve thousand, four hundred fifty-five".