725597616 has 20 divisors (see below), whose sum is σ = 1874460632. Its totient is φ = 241865856.

The previous prime is 725597599. The next prime is 725597633. The reversal of 725597616 is 616795527.

It is an interprime number because it is at equal distance from previous prime (725597599) and next prime (725597633).

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 15116617 = 725597616 / (7 + 2 + 5 + 5 + 9 + 7 + 6 + 1 + 6).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7558261 + ... + 7558356.

Almost surely, 2^725597616 is an apocalyptic number.

It is an amenable number.

725597616 is an abundant number, since it is smaller than the sum of its proper divisors (1148863016).

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

725597616 is a wasteful number, since it uses less digits than its factorization.

725597616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15116628 (or 15116622 counting only the distinct ones).

The product of its digits is 793800, while the sum is 48.

The square root of 725597616 is about 26936.9192002352. The cubic root of 725597616 is about 898.5976580402.

The spelling of 725597616 in words is "seven hundred twenty-five million, five hundred ninety-seven thousand, six hundred sixteen".