138925 has 6 divisors (see below), whose sum is σ = 172298. Its totient is φ = 111120.

The previous prime is 138923. The next prime is 138937. The reversal of 138925 is 529831.

It can be written as a sum of positive squares in 3 ways, for example, as 34596 + 104329 = 186^2 + 323^2 .

It is not a de Polignac number, because 138925 - 2¹ = 138923 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 138893 and 138902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138923) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2754 + ... + 2803.

2¹³⁸⁹²⁵ is an apocalyptic number.

It is an amenable number.

138925 is a deficient number, since it is larger than the sum of its proper divisors (33373).

138925 is an equidigital number, since it uses as much as digits as its factorization.

138925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5567 (or 5562 counting only the distinct ones).

The product of its digits is 2160, while the sum is 28.

The square root of 138925 is about 372.7264412408. The cubic root of 138925 is about 51.7916962684.

The spelling of 138925 in words is "one hundred thirty-eight thousand, nine hundred twenty-five".