725891224 has 32 divisors (see below), whose sum is σ = 1454876640. Its totient is φ = 338694400.

The previous prime is 725891207. The next prime is 725891237. The reversal of 725891224 is 422198527.

It is a congruent number.

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, 40567 + ... + 55654.

It is an arithmetic number, because the mean of its divisors is an integer number (45464895).

Almost surely, 2^725891224 is an apocalyptic number.

It is an amenable number.

725891224 is an abundant number, since it is smaller than the sum of its proper divisors (728985416).

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

725891224 is a wasteful number, since it uses less digits than its factorization.

725891224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96291 (or 96287 counting only the distinct ones).

The product of its digits is 80640, while the sum is 40.

The square root of 725891224 is about 26942.3685669987. The cubic root of 725891224 is about 898.7188454481.

The spelling of 725891224 in words is "seven hundred twenty-five million, eight hundred ninety-one thousand, two hundred twenty-four".