725915 has 8 divisors (see below), whose sum is σ = 889920. Its totient is φ = 568192.

The previous prime is 725909. The next prime is 725929. The reversal of 725915 is 519527.

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

It is a cyclic number.

It is not a de Polignac number, because 725915 - 2¹⁴ = 709531 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 725915.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1310 + ... + 1779.

It is an arithmetic number, because the mean of its divisors is an integer number (111240).

2⁷²⁵⁹¹⁵ is an apocalyptic number.

725915 is a deficient number, since it is larger than the sum of its proper divisors (164005).

725915 is a wasteful number, since it uses less digits than its factorization.

725915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3141.

The product of its digits is 3150, while the sum is 29.

The square root of 725915 is about 852.0064553746. The cubic root of 725915 is about 89.8728657619.

The spelling of 725915 in words is "seven hundred twenty-five thousand, nine hundred fifteen".