725157969138 has 48 divisors (see below), whose sum is σ = 1654495926720. Its totient is φ = 228910455648.

The previous prime is 725157969097. The next prime is 725157969139. The reversal of 725157969138 is 831969751527.

725157969138 is a `hidden beast` number, since 7 + 2 + 51 + 579 + 6 + 9 + 1 + 3 + 8 = 666.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (725157969139) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 504756 + ... + 1305792.

It is an arithmetic number, because the mean of its divisors is an integer number (34468665140).

Almost surely, 2^725157969138 is an apocalyptic number.

725157969138 is an abundant number, since it is smaller than the sum of its proper divisors (929337957582).

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

725157969138 is a wasteful number, since it uses less digits than its factorization.

725157969138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 803711 (or 803708 counting only the distinct ones).

The product of its digits is 28576800, while the sum is 63.

The spelling of 725157969138 in words is "seven hundred twenty-five billion, one hundred fifty-seven million, nine hundred sixty-nine thousand, one hundred thirty-eight".