13686825 has 24 divisors (see below), whose sum is σ = 23186016. Its totient is φ = 7120000.

The previous prime is 13686809. The next prime is 13686833. The reversal of 13686825 is 52868631.

It is a happy number.

13686825 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13686825 - 2⁴ = 13686809 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 850 + ... + 5300.

It is an arithmetic number, because the mean of its divisors is an integer number (966084).

Almost surely, 2^13686825 is an apocalyptic number.

13686825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13686825 is a deficient number, since it is larger than the sum of its proper divisors (9499191).

13686825 is a wasteful number, since it uses less digits than its factorization.

13686825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4505 (or 4500 counting only the distinct ones).

The product of its digits is 69120, while the sum is 39.

The square root of 13686825 is about 3699.5709210664. The cubic root of 13686825 is about 239.2035228860.

The spelling of 13686825 in words is "thirteen million, six hundred eighty-six thousand, eight hundred twenty-five".