13838320825 has 48 divisors (see below), whose sum is σ = 20681672320. Its totient is φ = 8972881920.

The previous prime is 13838320823. The next prime is 13838320843. The reversal of 13838320825 is 52802383831.

It is not a de Polignac number, because 13838320825 - 2¹ = 13838320823 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13838320823) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1914919 + ... + 1922131.

Almost surely, 2^13838320825 is an apocalyptic number.

It is an amenable number.

13838320825 is a deficient number, since it is larger than the sum of its proper divisors (6843351495).

13838320825 is a wasteful number, since it uses less digits than its factorization.

13838320825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7826 (or 7821 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 43.

The spelling of 13838320825 in words is "thirteen billion, eight hundred thirty-eight million, three hundred twenty thousand, eight hundred twenty-five".