725259128 has 32 divisors (see below), whose sum is σ = 1488890160. Its totient is φ = 328462080.

The previous prime is 725259103. The next prime is 725259137. The reversal of 725259128 is 821952527.

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, 9500 + ... + 39252.

Almost surely, 2^725259128 is an apocalyptic number.

It is an amenable number.

725259128 is an abundant number, since it is smaller than the sum of its proper divisors (763631032).

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

725259128 is a wasteful number, since it uses less digits than its factorization.

725259128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30047 (or 30043 counting only the distinct ones).

The product of its digits is 100800, while the sum is 41.

The square root of 725259128 is about 26930.6354919449. The cubic root of 725259128 is about 898.4579057281.

The spelling of 725259128 in words is "seven hundred twenty-five million, two hundred fifty-nine thousand, one hundred twenty-eight".