138410425 has 6 divisors (see below), whose sum is σ = 171628958. Its totient is φ = 110728320.

The previous prime is 138410411. The next prime is 138410431. The reversal of 138410425 is 524014831.

It can be written as a sum of positive squares in 3 ways, for example, as 44475561 + 93934864 = 6669^2 + 9692^2 .

It is not a de Polignac number, because 138410425 - 2⁹ = 138409913 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 138410393 and 138410402.

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, 2768184 + ... + 2768233.

Almost surely, 2^138410425 is an apocalyptic number.

It is an amenable number.

138410425 is a deficient number, since it is larger than the sum of its proper divisors (33218533).

138410425 is an equidigital number, since it uses as much as digits as its factorization.

138410425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5536427 (or 5536422 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 138410425 is about 11764.7960033313. The cubic root of 138410425 is about 517.2767207180.

The spelling of 138410425 in words is "one hundred thirty-eight million, four hundred ten thousand, four hundred twenty-five".