725039 has 4 divisors (see below), whose sum is σ = 828624. Its totient is φ = 621456.

The previous prime is 725009. The next prime is 725041. The reversal of 725039 is 930527.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 725039 - 2⁸ = 724783 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 724999 and 725017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51782 + ... + 51795.

It is an arithmetic number, because the mean of its divisors is an integer number (207156).

2⁷²⁵⁰³⁹ is an apocalyptic number.

725039 is a deficient number, since it is larger than the sum of its proper divisors (103585).

725039 is a wasteful number, since it uses less digits than its factorization.

725039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103584.

The product of its (nonzero) digits is 1890, while the sum is 26.

The square root of 725039 is about 851.4922195769. The cubic root of 725039 is about 89.8366997643.

The spelling of 725039 in words is "seven hundred twenty-five thousand, thirty-nine".