138379925 has 12 divisors (see below), whose sum is σ = 172206240. Its totient is φ = 110307120.

The previous prime is 138379897. The next prime is 138379931. The reversal of 138379925 is 529973831.

It is not a de Polignac number, because 138379925 - 2¹⁰ = 138378901 is a prime.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 138379925.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2705 + ... + 16854.

It is an arithmetic number, because the mean of its divisors is an integer number (14350520).

Almost surely, 2^138379925 is an apocalyptic number.

It is an amenable number.

138379925 is a deficient number, since it is larger than the sum of its proper divisors (33826315).

138379925 is a wasteful number, since it uses less digits than its factorization.

138379925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19852 (or 19847 counting only the distinct ones).

The product of its digits is 408240, while the sum is 47.

The square root of 138379925 is about 11763.4996918434. The cubic root of 138379925 is about 517.2387223784.

The spelling of 138379925 in words is "one hundred thirty-eight million, three hundred seventy-nine thousand, nine hundred twenty-five".