138047925 has 24 divisors (see below), whose sum is σ = 234412576. Its totient is φ = 71634240.

The previous prime is 138047873. The next prime is 138047951. The reversal of 138047925 is 529740831.

138047925 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 138047925 - 2¹¹ = 138045877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22099 + ... + 27648.

Almost surely, 2^138047925 is an apocalyptic number.

138047925 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

138047925 is a deficient number, since it is larger than the sum of its proper divisors (96364651).

138047925 is a wasteful number, since it uses less digits than its factorization.

138047925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49797 (or 49792 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 138047925 is about 11749.3797708645. The cubic root of 138047925 is about 516.8247394699.

The spelling of 138047925 in words is "one hundred thirty-eight million, forty-seven thousand, nine hundred twenty-five".