531430121425 has 24 divisors (see below), whose sum is σ = 753270912576. Its totient is φ = 364332527040.

The previous prime is 531430121407. The next prime is 531430121459. The reversal of 531430121425 is 524121034135.

It is not a de Polignac number, because 531430121425 - 2⁵ = 531430121393 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 520539 + ... + 1154911.

It is an arithmetic number, because the mean of its divisors is an integer number (31386288024).

Almost surely, 2^531430121425 is an apocalyptic number.

It is an amenable number.

531430121425 is a deficient number, since it is larger than the sum of its proper divisors (221840791151).

531430121425 is a wasteful number, since it uses less digits than its factorization.

531430121425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639177 (or 639172 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

The spelling of 531430121425 in words is "five hundred thirty-one billion, four hundred thirty million, one hundred twenty-one thousand, four hundred twenty-five".