13871825 has 24 divisors (see below), whose sum is σ = 19049376. Its totient is φ = 9936000.

The previous prime is 13871761. The next prime is 13871839. The reversal of 13871825 is 52817831.

It is not a de Polignac number, because 13871825 - 2⁶ = 13871761 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 (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19730 + ... + 20420.

It is an arithmetic number, because the mean of its divisors is an integer number (793724).

Almost surely, 2^13871825 is an apocalyptic number.

It is an amenable number.

13871825 is a deficient number, since it is larger than the sum of its proper divisors (5177551).

13871825 is a wasteful number, since it uses less digits than its factorization.

13871825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 785 (or 780 counting only the distinct ones).

The product of its digits is 13440, while the sum is 35.

The square root of 13871825 is about 3724.4898979592. The cubic root of 13871825 is about 240.2764464963.

The spelling of 13871825 in words is "thirteen million, eight hundred seventy-one thousand, eight hundred twenty-five".