138293425 has 12 divisors (see below), whose sum is σ = 172796976. Its totient is φ = 109787600.

The previous prime is 138293401. The next prime is 138293437. The reversal of 138293425 is 524392831.

It is not a de Polignac number, because 138293425 - 2⁷ = 138293297 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17839 + ... + 24388.

It is an arithmetic number, because the mean of its divisors is an integer number (14399748).

Almost surely, 2^138293425 is an apocalyptic number.

It is an amenable number.

138293425 is a deficient number, since it is larger than the sum of its proper divisors (34503551).

138293425 is a wasteful number, since it uses less digits than its factorization.

138293425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42368 (or 42363 counting only the distinct ones).

The product of its digits is 51840, while the sum is 37.

The square root of 138293425 is about 11759.8224901569. The cubic root of 138293425 is about 517.1309262147.

The spelling of 138293425 in words is "one hundred thirty-eight million, two hundred ninety-three thousand, four hundred twenty-five".