421715731325 has 24 divisors (see below), whose sum is σ = 632786231232. Its totient is φ = 272166117120.

The previous prime is 421715731303. The next prime is 421715731331. The reversal of 421715731325 is 523137517124.

It is a happy number.

It is not a de Polignac number, because 421715731325 - 2²⁸ = 421447295869 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 70873619 + ... + 70879568.

It is an arithmetic number, because the mean of its divisors is an integer number (26366092968).

Almost surely, 2^421715731325 is an apocalyptic number.

It is an amenable number.

421715731325 is a deficient number, since it is larger than the sum of its proper divisors (211070499907).

421715731325 is a wasteful number, since it uses less digits than its factorization.

421715731325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141753221 (or 141753216 counting only the distinct ones).

The product of its digits is 176400, while the sum is 41.

The spelling of 421715731325 in words is "four hundred twenty-one billion, seven hundred fifteen million, seven hundred thirty-one thousand, three hundred twenty-five".