725817588 has 24 divisors (see below), whose sum is σ = 1734882240. Its totient is φ = 236038080.

The previous prime is 725817581. The next prime is 725817607. The reversal of 725817588 is 885718527.

It is a super-2 number, since 2×725817588² = 1053622342100275488, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 725817588.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725817581) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 737128 + ... + 738111.

It is an arithmetic number, because the mean of its divisors is an integer number (72286760).

Almost surely, 2^725817588 is an apocalyptic number.

It is an amenable number.

725817588 is an abundant number, since it is smaller than the sum of its proper divisors (1009064652).

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

725817588 is a wasteful number, since it uses less digits than its factorization.

725817588 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1475287 (or 1475285 counting only the distinct ones).

The product of its digits is 1254400, while the sum is 51.

The square root of 725817588 is about 26941.0019858208. The cubic root of 725817588 is about 898.6884550827.

The spelling of 725817588 in words is "seven hundred twenty-five million, eight hundred seventeen thousand, five hundred eighty-eight".