725457 has 8 divisors (see below), whose sum is σ = 979840. Its totient is φ = 477360.

The previous prime is 725449. The next prime is 725479. The reversal of 725457 is 754527.

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

It is not a de Polignac number, because 725457 - 2³ = 725449 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 725457.

It is not an unprimeable number, because it can be changed into a prime (725437) 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, 1294 + ... + 1767.

It is an arithmetic number, because the mean of its divisors is an integer number (122480).

2⁷²⁵⁴⁵⁷ is an apocalyptic number.

It is an amenable number.

725457 is a deficient number, since it is larger than the sum of its proper divisors (254383).

725457 is a wasteful number, since it uses less digits than its factorization.

725457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3143.

The product of its digits is 9800, while the sum is 30.

The square root of 725457 is about 851.7376356602. The cubic root of 725457 is about 89.8539606870.

The spelling of 725457 in words is "seven hundred twenty-five thousand, four hundred fifty-seven".