13685525 has 12 divisors (see below), whose sum is σ = 19394592. Its totient is φ = 9384240.

The previous prime is 13685521. The next prime is 13685531. The reversal of 13685525 is 52558631.

It is not a de Polignac number, because 13685525 - 2² = 13685521 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13685521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38927 + ... + 39276.

It is an arithmetic number, because the mean of its divisors is an integer number (1616216).

Almost surely, 2^13685525 is an apocalyptic number.

It is an amenable number.

13685525 is a deficient number, since it is larger than the sum of its proper divisors (5709067).

13685525 is an equidigital number, since it uses as much as digits as its factorization.

13685525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78220 (or 78215 counting only the distinct ones).

The product of its digits is 36000, while the sum is 35.

The square root of 13685525 is about 3699.3952208435. The cubic root of 13685525 is about 239.1959493149.

The spelling of 13685525 in words is "thirteen million, six hundred eighty-five thousand, five hundred twenty-five".