11663525 has 12 divisors (see below), whose sum is σ = 14668704. Its totient is φ = 9198000.

The previous prime is 11663503. The next prime is 11663527. The reversal of 11663525 is 52536611.

11663525 = 671² + 672² + ... + 695².

11663525 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 11663525 - 2⁸ = 11663269 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 (11663527) 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, 1511 + ... + 5060.

It is an arithmetic number, because the mean of its divisors is an integer number (1222392).

Almost surely, 2^11663525 is an apocalyptic number.

It is an amenable number.

11663525 is a deficient number, since it is larger than the sum of its proper divisors (3005179).

11663525 is an equidigital number, since it uses as much as digits as its factorization.

11663525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6652 (or 6647 counting only the distinct ones).

The product of its digits is 5400, while the sum is 29.

The square root of 11663525 is about 3415.1903314457. The cubic root of 11663525 is about 226.7827104285.

The spelling of 11663525 in words is "eleven million, six hundred sixty-three thousand, five hundred twenty-five".