138104886925 has 24 divisors (see below), whose sum is σ = 172329360840. Its totient is φ = 109788537600.

The previous prime is 138104886917. The next prime is 138104886973. The reversal of 138104886925 is 529688401831.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 51243829641 + 86861057284 = 226371^2 + 294722^2 .

It is not a de Polignac number, because 138104886925 - 2³ = 138104886917 is a prime.

It is a congruent 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 23 ways as a sum of consecutive naturals, for example, 6201711 + ... + 6223939.

It is an arithmetic number, because the mean of its divisors is an integer number (7180390035).

Almost surely, 2^138104886925 is an apocalyptic number.

It is an amenable number.

138104886925 is a deficient number, since it is larger than the sum of its proper divisors (34224473915).

138104886925 is a wasteful number, since it uses less digits than its factorization.

138104886925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23793 (or 23788 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 55.

The spelling of 138104886925 in words is "one hundred thirty-eight billion, one hundred four million, eight hundred eighty-six thousand, nine hundred twenty-five".