11181225 has 24 divisors (see below), whose sum is σ = 20168352. Its totient is φ = 5420800.

The previous prime is 11181133. The next prime is 11181241. The reversal of 11181225 is 52218111.

11181225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11181225 - 2¹⁰ = 11180201 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5952 + ... + 7601.

It is an arithmetic number, because the mean of its divisors is an integer number (840348).

Almost surely, 2^11181225 is an apocalyptic number.

11181225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11181225 is a deficient number, since it is larger than the sum of its proper divisors (8987127).

11181225 is a wasteful number, since it uses less digits than its factorization.

11181225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13577 (or 13572 counting only the distinct ones).

The product of its digits is 160, while the sum is 21.

The square root of 11181225 is about 3343.8338774526. The cubic root of 11181225 is about 223.6126983443.

Adding to 11181225 its reverse (52218111), we get a palindrome (63399336).

The spelling of 11181225 in words is "eleven million, one hundred eighty-one thousand, two hundred twenty-five".