138005120925 has 120 divisors (see below), whose sum is σ = 292825025856. Its totient is φ = 62942780160.

The previous prime is 138005120909. The next prime is 138005120933. The reversal of 138005120925 is 529021500831.

138005120925 is a `hidden beast` number, since 1 + 380 + 0 + 51 + 209 + 25 = 666.

It is not a de Polignac number, because 138005120925 - 2⁴ = 138005120909 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 138005120925.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 6268537 + ... + 6290513.

Almost surely, 2^138005120925 is an apocalyptic number.

138005120925 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

138005120925 is an abundant number, since it is smaller than the sum of its proper divisors (154819904931).

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

138005120925 is a wasteful number, since it uses less digits than its factorization.

138005120925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22449 (or 22435 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The spelling of 138005120925 in words is "one hundred thirty-eight billion, five million, one hundred twenty thousand, nine hundred twenty-five".