155040431525625 has 80 divisors (see below), whose sum is σ = 279262738568000. Its totient is φ = 76219022304000.

The previous prime is 155040431525563. The next prime is 155040431525641. The reversal of 155040431525625 is 526525134040551.

It is not a de Polignac number, because 155040431525625 - 2²⁶ = 155040364416761 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 57492850 + ... + 60129099.

It is an arithmetic number, because the mean of its divisors is an integer number (3490784232100).

Almost surely, 2^{155040431525625} is an apocalyptic number.

155040431525625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

155040431525625 is a deficient number, since it is larger than the sum of its proper divisors (124222307042375).

155040431525625 is a wasteful number, since it uses less digits than its factorization.

155040431525625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117622028 (or 117622013 counting only the distinct ones).

The product of its (nonzero) digits is 3600000, while the sum is 48.

The spelling of 155040431525625 in words is "one hundred fifty-five trillion, forty billion, four hundred thirty-one million, five hundred twenty-five thousand, six hundred twenty-five".