256165625045 has 64 divisors (see below), whose sum is σ = 344971284480. Its totient is φ = 181039622400.

The previous prime is 256165624999. The next prime is 256165625057. The reversal of 256165625045 is 540526561652.

It is not a de Polignac number, because 256165625045 - 2²⁸ = 255897189589 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 107495924 + ... + 107498306.

It is an arithmetic number, because the mean of its divisors is an integer number (5390176320).

Almost surely, 2^256165625045 is an apocalyptic number.

It is an amenable number.

256165625045 is a deficient number, since it is larger than the sum of its proper divisors (88805659435).

256165625045 is a wasteful number, since it uses less digits than its factorization.

256165625045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2826.

The product of its (nonzero) digits is 2160000, while the sum is 47.

The spelling of 256165625045 in words is "two hundred fifty-six billion, one hundred sixty-five million, six hundred twenty-five thousand, forty-five".