725578 has 8 divisors (see below), whose sum is σ = 1243872. Its totient is φ = 310956.

The previous prime is 725537. The next prime is 725579. The reversal of 725578 is 875527.

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

It is not an unprimeable number, because it can be changed into a prime (725579) 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, 25900 + ... + 25927.

It is an arithmetic number, because the mean of its divisors is an integer number (155484).

2⁷²⁵⁵⁷⁸ is an apocalyptic number.

725578 is a deficient number, since it is larger than the sum of its proper divisors (518294).

725578 is a wasteful number, since it uses less digits than its factorization.

725578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51836.

The product of its digits is 19600, while the sum is 34.

The square root of 725578 is about 851.8086639616. The cubic root of 725578 is about 89.8589560324.

The spelling of 725578 in words is "seven hundred twenty-five thousand, five hundred seventy-eight".