256524601403 has 12 divisors (see below), whose sum is σ = 299059162632. Its totient is φ = 219397076640.

The previous prime is 256524601393. The next prime is 256524601453. The reversal of 256524601403 is 304106425652.

It is not a de Polignac number, because 256524601403 - 2⁸ = 256524601147 is a prime.

It is a super-2 number, since 2×256524601403² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256524601453) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5705393 + ... + 5750178.

It is an arithmetic number, because the mean of its divisors is an integer number (24921596886).

Almost surely, 2^256524601403 is an apocalyptic number.

256524601403 is a deficient number, since it is larger than the sum of its proper divisors (42534561229).

256524601403 is a wasteful number, since it uses less digits than its factorization.

256524601403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11456042 (or 11456035 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 38.

The spelling of 256524601403 in words is "two hundred fifty-six billion, five hundred twenty-four million, six hundred one thousand, four hundred three".