725765 has 8 divisors (see below), whose sum is σ = 908928. Its totient is φ = 555280.

The previous prime is 725749. The next prime is 725789. The reversal of 725765 is 567527.

It is a happy number.

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

It is not a de Polignac number, because 725765 - 2⁴ = 725749 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 725765.

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, 3041 + ... + 3270.

It is an arithmetic number, because the mean of its divisors is an integer number (113616).

2⁷²⁵⁷⁶⁵ is an apocalyptic number.

It is an amenable number.

725765 is a deficient number, since it is larger than the sum of its proper divisors (183163).

725765 is a wasteful number, since it uses less digits than its factorization.

725765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6339.

The product of its digits is 14700, while the sum is 32.

The square root of 725765 is about 851.9184233247. The cubic root of 725765 is about 89.8666750194.

The spelling of 725765 in words is "seven hundred twenty-five thousand, seven hundred sixty-five".