256136525023 has 2 divisors, whose sum is σ = 256136525024. Its totient is φ = 256136525022.

The previous prime is 256136524999. The next prime is 256136525153. The reversal of 256136525023 is 320525631652.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 256136525023 - 2⁵ = 256136524991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256136525423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128068262511 + 128068262512.

It is an arithmetic number, because the mean of its divisors is an integer number (128068262512).

Almost surely, 2^256136525023 is an apocalyptic number.

256136525023 is a deficient number, since it is larger than the sum of its proper divisors (1).

256136525023 is an equidigital number, since it uses as much as digits as its factorization.

256136525023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324000, while the sum is 40.

The spelling of 256136525023 in words is "two hundred fifty-six billion, one hundred thirty-six million, five hundred twenty-five thousand, twenty-three".