256126455 has 40 divisors (see below), whose sum is σ = 494458272. Its totient is φ = 126090432.

The previous prime is 256126439. The next prime is 256126483. The reversal of 256126455 is 554621652.

256126455 is a `hidden beast` number, since 2 + 5 + 6 + 1 + 2 + 645 + 5 = 666.

It is not a de Polignac number, because 256126455 - 2⁴ = 256126439 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 19059 + ... + 29588.

Almost surely, 2^256126455 is an apocalyptic number.

256126455 is a deficient number, since it is larger than the sum of its proper divisors (238331817).

256126455 is a wasteful number, since it uses less digits than its factorization.

256126455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48677 (or 48668 counting only the distinct ones).

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

The square root of 256126455 is about 16003.9512308680. The cubic root of 256126455 is about 635.0649529524.

The spelling of 256126455 in words is "two hundred fifty-six million, one hundred twenty-six thousand, four hundred fifty-five".