725659 has 8 divisors (see below), whose sum is σ = 811440. Its totient is φ = 643200.

The previous prime is 725653. The next prime is 725663. The reversal of 725659 is 956527.

725659 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 725659 - 2⁷ = 725531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (725653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 354 + ... + 1255.

It is an arithmetic number, because the mean of its divisors is an integer number (101430).

2⁷²⁵⁶⁵⁹ is an apocalyptic number.

725659 is a deficient number, since it is larger than the sum of its proper divisors (85781).

725659 is a wasteful number, since it uses less digits than its factorization.

725659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1661.

The product of its digits is 18900, while the sum is 34.

The square root of 725659 is about 851.8562085235. The cubic root of 725659 is about 89.8622997136.

The spelling of 725659 in words is "seven hundred twenty-five thousand, six hundred fifty-nine".