725758 has 12 divisors (see below), whose sum is σ = 1197000. Its totient is φ = 329780.

The previous prime is 725749. The next prime is 725789. The reversal of 725758 is 857527.

It is a congruent number.

It is an unprimeable number.

725758 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1258 + ... + 1741.

It is an arithmetic number, because the mean of its divisors is an integer number (99750).

2⁷²⁵⁷⁵⁸ is an apocalyptic number.

725758 is a deficient number, since it is larger than the sum of its proper divisors (471242).

725758 is a wasteful number, since it uses less digits than its factorization.

725758 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3023 (or 3012 counting only the distinct ones).

The product of its digits is 19600, while the sum is 34.

The square root of 725758 is about 851.9143149402. The cubic root of 725758 is about 89.8663860972.

Subtracting 725758 from its reverse (857527), we obtain a square (131769 = 363²).

The spelling of 725758 in words is "seven hundred twenty-five thousand, seven hundred fifty-eight".