16690525 has 12 divisors (see below), whose sum is σ = 21596832. Its totient is φ = 12771440.

The previous prime is 16690511. The next prime is 16690537. The reversal of 16690525 is 52509661.

It is a happy number.

It is not a de Polignac number, because 16690525 - 2⁷ = 16690397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13939 + ... + 15088.

It is an arithmetic number, because the mean of its divisors is an integer number (1799736).

Almost surely, 2^16690525 is an apocalyptic number.

It is an amenable number.

16690525 is a deficient number, since it is larger than the sum of its proper divisors (4906307).

16690525 is a wasteful number, since it uses less digits than its factorization.

16690525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29060 (or 29055 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 34.

The square root of 16690525 is about 4085.4038968014. The cubic root of 16690525 is about 255.5583051234.

The spelling of 16690525 in words is "sixteen million, six hundred ninety thousand, five hundred twenty-five".