13690525 has 12 divisors (see below), whose sum is σ = 17975412. Its totient is φ = 10307840.

The previous prime is 13690519. The next prime is 13690529. The reversal of 13690525 is 52509631.

It can be written as a sum of positive squares in 6 ways, for example, as 974169 + 12716356 = 987^2 + 3566^2 .

It is not a de Polignac number, because 13690525 - 2³ = 13690517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13690529) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 15682 + ... + 16531.

It is an arithmetic number, because the mean of its divisors is an integer number (1497951).

Almost surely, 2^13690525 is an apocalyptic number.

It is an amenable number.

13690525 is a deficient number, since it is larger than the sum of its proper divisors (4284887).

13690525 is a wasteful number, since it uses less digits than its factorization.

13690525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32240 (or 32235 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 31.

The square root of 13690525 is about 3700.0709452658. The cubic root of 13690525 is about 239.2250758099.

The spelling of 13690525 in words is "thirteen million, six hundred ninety thousand, five hundred twenty-five".