725860677938 has 18 divisors (see below), whose sum is σ = 1196792143743. Its totient is φ = 329930647420.

The previous prime is 725860677911. The next prime is 725860677947. The reversal of 725860677938 is 839776068527.

It can be written as a sum of positive squares in only one way, i.e., 362930338969 + 362930338969 = 602437^2 + 602437^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=602437.

It is a super-2 number, since 2×725860677938² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 13226231 + ... + 13280997.

Almost surely, 2^725860677938 is an apocalyptic number.

725860677938 is a deficient number, since it is larger than the sum of its proper divisors (470931465805).

725860677938 is an frugal number, since it uses more digits than its factorization.

725860677938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109558 (or 54780 counting only the distinct ones).

The product of its (nonzero) digits is 213373440, while the sum is 68.

The spelling of 725860677938 in words is "seven hundred twenty-five billion, eight hundred sixty million, six hundred seventy-seven thousand, nine hundred thirty-eight".