138478886425 has 24 divisors (see below), whose sum is σ = 187990905312. Its totient is φ = 100353456000.

The previous prime is 138478886411. The next prime is 138478886453. The reversal of 138478886425 is 524688874831.

138478886425 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 138478886425 - 2¹¹ = 138478884377 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 818739 + ... + 973288.

It is an arithmetic number, because the mean of its divisors is an integer number (7832954388).

Almost surely, 2^138478886425 is an apocalyptic number.

It is an amenable number.

138478886425 is a deficient number, since it is larger than the sum of its proper divisors (49512018887).

138478886425 is a wasteful number, since it uses less digits than its factorization.

138478886425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1792329 (or 1792324 counting only the distinct ones).

The product of its digits is 82575360, while the sum is 64.

The spelling of 138478886425 in words is "one hundred thirty-eight billion, four hundred seventy-eight million, eight hundred eighty-six thousand, four hundred twenty-five".