725812 has 12 divisors (see below), whose sum is σ = 1314180. Its totient is φ = 350336.

The previous prime is 725807. The next prime is 725827. The reversal of 725812 is 218527.

It can be written as a sum of positive squares in 2 ways, for example, as 599076 + 126736 = 774^2 + 356^2 .

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

725812 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, 3013 + ... + 3244.

It is an arithmetic number, because the mean of its divisors is an integer number (109515).

2⁷²⁵⁸¹² is an apocalyptic number.

It is an amenable number.

725812 is a deficient number, since it is larger than the sum of its proper divisors (588368).

725812 is a wasteful number, since it uses less digits than its factorization.

725812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6290 (or 6288 counting only the distinct ones).

The product of its digits is 1120, while the sum is 25.

The square root of 725812 is about 851.9460076789. The cubic root of 725812 is about 89.8686148771.

The spelling of 725812 in words is "seven hundred twenty-five thousand, eight hundred twelve".