725398 has 8 divisors (see below), whose sum is σ = 1111392. Its totient is φ = 354936.

The previous prime is 725393. The next prime is 725399. The reversal of 725398 is 893527.

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

It is a congruent number.

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

725398 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3765 + ... + 3952.

It is an arithmetic number, because the mean of its divisors is an integer number (138924).

2⁷²⁵³⁹⁸ is an apocalyptic number.

725398 is a deficient number, since it is larger than the sum of its proper divisors (385994).

725398 is a wasteful number, since it uses less digits than its factorization.

725398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7766.

The product of its digits is 15120, while the sum is 34.

The square root of 725398 is about 851.7029998773. The cubic root of 725398 is about 89.8515247387.

The spelling of 725398 in words is "seven hundred twenty-five thousand, three hundred ninety-eight".