11525639 has 2 divisors, whose sum is σ = 11525640. Its totient is φ = 11525638.

The previous prime is 11525623. The next prime is 11525641. The reversal of 11525639 is 93652511.

11525639 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (93652511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11525639 - 2⁴ = 11525623 is a prime.

It is a Sophie Germain prime.

Together with 11525641, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11525659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5762819 + 5762820.

It is an arithmetic number, because the mean of its divisors is an integer number (5762820).

Almost surely, 2^11525639 is an apocalyptic number.

11525639 is a deficient number, since it is larger than the sum of its proper divisors (1).

11525639 is an equidigital number, since it uses as much as digits as its factorization.

11525639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8100, while the sum is 32.

The square root of 11525639 is about 3394.9431512177. The cubic root of 11525639 is about 225.8854916298.

The spelling of 11525639 in words is "eleven million, five hundred twenty-five thousand, six hundred thirty-nine".