13985525 has 6 divisors (see below), whose sum is σ = 17342082. Its totient is φ = 11188400.

The previous prime is 13985459. The next prime is 13985533. The reversal of 13985525 is 52558931.

It can be written as a sum of positive squares in 3 ways, for example, as 339889 + 13645636 = 583^2 + 3694^2 .

It is a de Polignac number, because none of the positive numbers 2^k-13985525 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 279686 + ... + 279735.

It is an arithmetic number, because the mean of its divisors is an integer number (2890347).

Almost surely, 2^13985525 is an apocalyptic number.

It is an amenable number.

13985525 is a deficient number, since it is larger than the sum of its proper divisors (3356557).

13985525 is an equidigital number, since it uses as much as digits as its factorization.

13985525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559431 (or 559426 counting only the distinct ones).

The product of its digits is 54000, while the sum is 38.

The square root of 13985525 is about 3739.7225832941. The cubic root of 13985525 is about 240.9311339421.

The spelling of 13985525 in words is "thirteen million, nine hundred eighty-five thousand, five hundred twenty-five".