138795925 has 6 divisors (see below), whose sum is σ = 172106978. Its totient is φ = 111036720.

The previous prime is 138795919. The next prime is 138795949. The reversal of 138795925 is 529597831.

138795925 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 20921476 + 117874449 = 4574^2 + 10857^2 .

It is not a de Polignac number, because 138795925 - 2²¹ = 136698773 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 5 ways as a sum of consecutive naturals, for example, 2775894 + ... + 2775943.

Almost surely, 2^138795925 is an apocalyptic number.

It is an amenable number.

138795925 is a deficient number, since it is larger than the sum of its proper divisors (33311053).

138795925 is an equidigital number, since it uses as much as digits as its factorization.

138795925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5551847 (or 5551842 counting only the distinct ones).

The product of its digits is 680400, while the sum is 49.

The square root of 138795925 is about 11781.1682357905. The cubic root of 138795925 is about 517.7565143696.

The spelling of 138795925 in words is "one hundred thirty-eight million, seven hundred ninety-five thousand, nine hundred twenty-five".