725556312 has 64 divisors (see below), whose sum is σ = 2170476000. Its totient is φ = 223247232.

The previous prime is 725556301. The next prime is 725556317. The reversal of 725556312 is 213655527.

725556312 is a `hidden beast` number, since 72 + 5 + 556 + 31 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725556317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126387 + ... + 132002.

Almost surely, 2^725556312 is an apocalyptic number.

725556312 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

725556312 is an abundant number, since it is smaller than the sum of its proper divisors (1444919688).

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

725556312 is a wasteful number, since it uses less digits than its factorization.

725556312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258417 (or 258407 counting only the distinct ones).

The product of its digits is 63000, while the sum is 36.

The square root of 725556312 is about 26936.1525092208. The cubic root of 725556312 is about 898.5806070921.

The spelling of 725556312 in words is "seven hundred twenty-five million, five hundred fifty-six thousand, three hundred twelve".