725307612 has 12 divisors (see below), whose sum is σ = 1692384456. Its totient is φ = 241769200.

The previous prime is 725307581. The next prime is 725307613. The reversal of 725307612 is 216703527.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×725307612² = 1052142264050285088, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725307613) 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, 30221139 + ... + 30221162.

It is an arithmetic number, because the mean of its divisors is an integer number (141032038).

Almost surely, 2^725307612 is an apocalyptic number.

It is an amenable number.

725307612 is an abundant number, since it is smaller than the sum of its proper divisors (967076844).

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

725307612 is a wasteful number, since it uses less digits than its factorization.

725307612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60442308 (or 60442306 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 33.

The square root of 725307612 is about 26931.5356413258. The cubic root of 725307612 is about 898.4779260955.

The spelling of 725307612 in words is "seven hundred twenty-five million, three hundred seven thousand, six hundred twelve".