725524615 has 4 divisors (see below), whose sum is σ = 870629544. Its totient is φ = 580419688.

The previous prime is 725524609. The next prime is 725524661. The reversal of 725524615 is 516425527.

725524615 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 725524615 - 2⁹ = 725524103 is a prime.

It is a Duffinian number.

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, 72552457 + ... + 72552466.

It is an arithmetic number, because the mean of its divisors is an integer number (217657386).

Almost surely, 2^725524615 is an apocalyptic number.

725524615 is a deficient number, since it is larger than the sum of its proper divisors (145104929).

725524615 is a wasteful number, since it uses less digits than its factorization.

725524615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145104928.

The product of its digits is 84000, while the sum is 37.

The square root of 725524615 is about 26935.5641299751. The cubic root of 725524615 is about 898.5675216275.

The spelling of 725524615 in words is "seven hundred twenty-five million, five hundred twenty-four thousand, six hundred fifteen".