725431812 has 24 divisors (see below), whose sum is σ = 1934485056. Its totient is φ = 207266208.

The previous prime is 725431807. The next prime is 725431823. The reversal of 725431812 is 218134527.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4317963 + ... + 4318130.

It is an arithmetic number, because the mean of its divisors is an integer number (80603544).

Almost surely, 2^725431812 is an apocalyptic number.

It is an amenable number.

725431812 is an abundant number, since it is smaller than the sum of its proper divisors (1209053244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

725431812 is a wasteful number, since it uses less digits than its factorization.

725431812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8636107 (or 8636105 counting only the distinct ones).

The product of its digits is 13440, while the sum is 33.

The square root of 725431812 is about 26933.8413895976. The cubic root of 725431812 is about 898.5292075967.

The spelling of 725431812 in words is "seven hundred twenty-five million, four hundred thirty-one thousand, eight hundred twelve".