725396 has 18 divisors (see below), whose sum is σ = 1477098. Its totient is φ = 310800.

The previous prime is 725393. The next prime is 725399. The reversal of 725396 is 693527.

It is an interprime number because it is at equal distance from previous prime (725393) and next prime (725399).

It can be written as a sum of positive squares in only one way, i.e., 592900 + 132496 = 770^2 + 364^2 .

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 725396.

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

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1655 + ... + 2046.

It is an arithmetic number, because the mean of its divisors is an integer number (82061).

2⁷²⁵³⁹⁶ is an apocalyptic number.

It is an amenable number.

725396 is an abundant number, since it is smaller than the sum of its proper divisors (751702).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

725396 is a wasteful number, since it uses less digits than its factorization.

725396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3719 (or 3710 counting only the distinct ones).

The product of its digits is 11340, while the sum is 32.

The square root of 725396 is about 851.7018257583. The cubic root of 725396 is about 89.8514421618.

The spelling of 725396 in words is "seven hundred twenty-five thousand, three hundred ninety-six".