725392 has 10 divisors (see below), whose sum is σ = 1405478. Its totient is φ = 362688.

The previous prime is 725381. The next prime is 725393. The reversal of 725392 is 293527.

It can be written as a sum of positive squares in only one way, i.e., 665856 + 59536 = 816^2 + 244^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 725392.

It is not an unprimeable number, because it can be changed into a prime (725393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22653 + ... + 22684.

2⁷²⁵³⁹² is an apocalyptic number.

It is an amenable number.

725392 is a deficient number, since it is larger than the sum of its proper divisors (680086).

725392 is a wasteful number, since it uses less digits than its factorization.

725392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45345 (or 45339 counting only the distinct ones).

The product of its digits is 3780, while the sum is 28.

The square root of 725392 is about 851.6994775154. The cubic root of 725392 is about 89.8512770077.

The spelling of 725392 in words is "seven hundred twenty-five thousand, three hundred ninety-two".