531655400625 has 20 divisors (see below), whose sum is σ = 885808787952. Its totient is φ = 283549546000.

The previous prime is 531655400587. The next prime is 531655400641. The reversal of 531655400625 is 526004556135.

531655400625 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 531655400625 - 2⁶ = 531655400561 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 141772899 + ... + 141776648.

Almost surely, 2^531655400625 is an apocalyptic number.

It is an amenable number.

531655400625 is a deficient number, since it is larger than the sum of its proper divisors (354153387327).

531655400625 is an equidigital number, since it uses as much as digits as its factorization.

531655400625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283549570 (or 283549555 counting only the distinct ones).

The product of its (nonzero) digits is 540000, while the sum is 42.

The spelling of 531655400625 in words is "five hundred thirty-one billion, six hundred fifty-five million, four hundred thousand, six hundred twenty-five".