725271312 has 80 divisors (see below), whose sum is σ = 1897021440. Its totient is φ = 238761600.

The previous prime is 725271311. The next prime is 725271317. The reversal of 725271312 is 213172527.

It is a self number, because there is not a number n which added to its sum of digits gives 725271312.

It is not an unprimeable number, because it can be changed into a prime (725271311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2190987 + ... + 2191317.

It is an arithmetic number, because the mean of its divisors is an integer number (23712768).

Almost surely, 2^725271312 is an apocalyptic number.

It is an amenable number.

725271312 is an abundant number, since it is smaller than the sum of its proper divisors (1171750128).

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

725271312 is a wasteful number, since it uses less digits than its factorization.

725271312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 772 (or 766 counting only the distinct ones).

The product of its digits is 5880, while the sum is 30.

The square root of 725271312 is about 26930.8617017726. The cubic root of 725271312 is about 898.4629369183.

The spelling of 725271312 in words is "seven hundred twenty-five million, two hundred seventy-one thousand, three hundred twelve".