256155113625 has 32 divisors (see below), whose sum is σ = 426293442432. Its totient is φ = 136599608000.

The previous prime is 256155113609. The next prime is 256155113633. The reversal of 256155113625 is 526311551652.

It is a happy number.

It is not a de Polignac number, because 256155113625 - 2⁴ = 256155113609 is a prime.

It is a Curzon 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 31 ways as a sum of consecutive naturals, for example, 3477679 + ... + 3550571.

It is an arithmetic number, because the mean of its divisors is an integer number (13321670076).

Almost surely, 2^256155113625 is an apocalyptic number.

256155113625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

256155113625 is a deficient number, since it is larger than the sum of its proper divisors (170138328807).

256155113625 is an equidigital number, since it uses as much as digits as its factorization.

256155113625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82282 (or 82272 counting only the distinct ones).

The product of its digits is 270000, while the sum is 42.

The spelling of 256155113625 in words is "two hundred fifty-six billion, one hundred fifty-five million, one hundred thirteen thousand, six hundred twenty-five".