725512 has 16 divisors (see below), whose sum is σ = 1419840. Its totient is φ = 346896.

The previous prime is 725507. The next prime is 725519. The reversal of 725512 is 215527.

It is not an unprimeable number, because it can be changed into a prime (725519) by changing a digit.

725512 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, 1788 + ... + 2155.

It is an arithmetic number, because the mean of its divisors is an integer number (88740).

2⁷²⁵⁵¹² is an apocalyptic number.

It is an amenable number.

725512 is a deficient number, since it is larger than the sum of its proper divisors (694328).

725512 is a wasteful number, since it uses less digits than its factorization.

725512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3972 (or 3968 counting only the distinct ones).

The product of its digits is 700, while the sum is 22.

The square root of 725512 is about 851.7699219860. The cubic root of 725512 is about 89.8562313674.

The spelling of 725512 in words is "seven hundred twenty-five thousand, five hundred twelve".