11138825 has 12 divisors (see below), whose sum is σ = 14625180. Its totient is φ = 8386560.

The previous prime is 11138821. The next prime is 11138833. The reversal of 11138825 is 52883111.

It can be written as a sum of positive squares in 6 ways, for example, as 43264 + 11095561 = 208^2 + 3331^2 .

It is not a de Polignac number, because 11138825 - 2² = 11138821 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11138821) 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, 12680 + ... + 13529.

It is an arithmetic number, because the mean of its divisors is an integer number (1218765).

Almost surely, 2^11138825 is an apocalyptic number.

It is an amenable number.

11138825 is a deficient number, since it is larger than the sum of its proper divisors (3486355).

11138825 is a wasteful number, since it uses less digits than its factorization.

11138825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26236 (or 26231 counting only the distinct ones).

The product of its digits is 1920, while the sum is 29.

The square root of 11138825 is about 3337.4878276932. The cubic root of 11138825 is about 223.3296885621.

The spelling of 11138825 in words is "eleven million, one hundred thirty-eight thousand, eight hundred twenty-five".