11638825 has 12 divisors (see below), whose sum is σ = 15744528. Its totient is φ = 8464400.

The previous prime is 11638819. The next prime is 11638873. The reversal of 11638825 is 52883611.

It is not a de Polignac number, because 11638825 - 2¹⁷ = 11507753 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20887 + ... + 21436.

It is an arithmetic number, because the mean of its divisors is an integer number (1312044).

Almost surely, 2^11638825 is an apocalyptic number.

It is an amenable number.

11638825 is a deficient number, since it is larger than the sum of its proper divisors (4105703).

11638825 is a wasteful number, since it uses less digits than its factorization.

11638825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42344 (or 42339 counting only the distinct ones).

The product of its digits is 11520, while the sum is 34.

The square root of 11638825 is about 3411.5722182009. The cubic root of 11638825 is about 226.6225103817.

It can be divided in two parts, 11 and 638825, that added together give a palindrome (638836).

The spelling of 11638825 in words is "eleven million, six hundred thirty-eight thousand, eight hundred twenty-five".