725064520 has 16 divisors (see below), whose sum is σ = 1631395260. Its totient is φ = 290025792.

The previous prime is 725064517. The next prime is 725064533. The reversal of 725064520 is 25460527.

It can be written as a sum of positive squares in 2 ways, for example, as 626300676 + 98763844 = 25026^2 + 9938^2 .

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, 9063267 + ... + 9063346.

Almost surely, 2^725064520 is an apocalyptic number.

It is an amenable number.

725064520 is an abundant number, since it is smaller than the sum of its proper divisors (906330740).

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

725064520 is a wasteful number, since it uses less digits than its factorization.

725064520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18126624 (or 18126620 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 725064520 is about 26927.0221153398. The cubic root of 725064520 is about 898.3775377923.

The spelling of 725064520 in words is "seven hundred twenty-five million, sixty-four thousand, five hundred twenty".