725790 has 32 divisors (see below), whose sum is σ = 1876896. Its totient is φ = 178560.

The previous prime is 725789. The next prime is 725801. The reversal of 725790 is 97527.

It is a happy number.

725790 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×725790² = 1053542248200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 541 + ... + 1320.

It is an arithmetic number, because the mean of its divisors is an integer number (58653).

2⁷²⁵⁷⁹⁰ is an apocalyptic number.

725790 is an abundant number, since it is smaller than the sum of its proper divisors (1151106).

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

725790 is a wasteful number, since it uses less digits than its factorization.

725790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1884.

The product of its (nonzero) digits is 4410, while the sum is 30.

The square root of 725790 is about 851.9330959647. The cubic root of 725790 is about 89.8677068690.

The spelling of 725790 in words is "seven hundred twenty-five thousand, seven hundred ninety".