11525621 has 2 divisors, whose sum is σ = 11525622. Its totient is φ = 11525620.

The previous prime is 11525617. The next prime is 11525623. The reversal of 11525621 is 12652511.

It is a happy number.

11525621 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 can be written as a sum of positive squares in only one way, i.e., 9523396 + 2002225 = 3086^2 + 1415^2 .

It is an emirp because it is prime and its reverse (12652511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11525621 - 2² = 11525617 is a prime.

It is a Sophie Germain prime.

Together with 11525623, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11525623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5762810 + 5762811.

It is an arithmetic number, because the mean of its divisors is an integer number (5762811).

Almost surely, 2^11525621 is an apocalyptic number.

It is an amenable number.

11525621 is a deficient number, since it is larger than the sum of its proper divisors (1).

11525621 is an equidigital number, since it uses as much as digits as its factorization.

11525621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 600, while the sum is 23.

The square root of 11525621 is about 3394.9405002150. The cubic root of 11525621 is about 225.8853740386.

The spelling of 11525621 in words is "eleven million, five hundred twenty-five thousand, six hundred twenty-one".