725516020 has 12 divisors (see below), whose sum is σ = 1523583684. Its totient is φ = 290206400.

The previous prime is 725515981. The next prime is 725516093. The reversal of 725516020 is 20615527.

It can be written as a sum of positive squares in 2 ways, for example, as 168272784 + 557243236 = 12972^2 + 23606^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 725516020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18137881 + ... + 18137920.

It is an arithmetic number, because the mean of its divisors is an integer number (126965307).

Almost surely, 2^725516020 is an apocalyptic number.

It is an amenable number.

725516020 is an abundant number, since it is smaller than the sum of its proper divisors (798067664).

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

725516020 is a wasteful number, since it uses less digits than its factorization.

725516020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36275810 (or 36275808 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 725516020 is about 26935.4045820738. The cubic root of 725516020 is about 898.5639732901.

The spelling of 725516020 in words is "seven hundred twenty-five million, five hundred sixteen thousand, twenty".