725168251616 has 12 divisors (see below), whose sum is σ = 1427674995432. Its totient is φ = 362584125792.

The previous prime is 725168251567. The next prime is 725168251651. The reversal of 725168251616 is 616152861527.

It is a super-2 number, since 2×725168251616² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 11330753900 + ... + 11330753963.

It is an arithmetic number, because the mean of its divisors is an integer number (118972916286).

Almost surely, 2^725168251616 is an apocalyptic number.

It is an amenable number.

725168251616 is a deficient number, since it is larger than the sum of its proper divisors (702506743816).

725168251616 is a wasteful number, since it uses less digits than its factorization.

725168251616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22661507873 (or 22661507865 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 50.

The spelling of 725168251616 in words is "seven hundred twenty-five billion, one hundred sixty-eight million, two hundred fifty-one thousand, six hundred sixteen".