138009325 has 6 divisors (see below), whose sum is σ = 171131594. Its totient is φ = 110407440.

The previous prime is 138009323. The next prime is 138009353. The reversal of 138009325 is 523900831.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 12524521 + 125484804 = 3539^2 + 11202^2 .

It is not a de Polignac number, because 138009325 - 2¹ = 138009323 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138009323) 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, 2760162 + ... + 2760211.

Almost surely, 2^138009325 is an apocalyptic number.

It is an amenable number.

138009325 is a deficient number, since it is larger than the sum of its proper divisors (33122269).

138009325 is an equidigital number, since it uses as much as digits as its factorization.

138009325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5520383 (or 5520378 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 138009325 is about 11747.7370161236. The cubic root of 138009325 is about 516.7765646673.

The spelling of 138009325 in words is "one hundred thirty-eight million, nine thousand, three hundred twenty-five".