725755 has 8 divisors (see below), whose sum is σ = 894672. Its totient is φ = 564768.

The previous prime is 725749. The next prime is 725789. The reversal of 725755 is 557527.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 725755 - 2⁵ = 725723 is a prime.

It is a Duffinian 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, 1777 + ... + 2146.

It is an arithmetic number, because the mean of its divisors is an integer number (111834).

2⁷²⁵⁷⁵⁵ is an apocalyptic number.

725755 is a deficient number, since it is larger than the sum of its proper divisors (168917).

725755 is a wasteful number, since it uses less digits than its factorization.

725755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3965.

The product of its digits is 12250, while the sum is 31.

The square root of 725755 is about 851.9125541979. The cubic root of 725755 is about 89.8662622729.

The spelling of 725755 in words is "seven hundred twenty-five thousand, seven hundred fifty-five".