11155225 has 12 divisors (see below), whose sum is σ = 13937724. Its totient is φ = 8856320.

The previous prime is 11155219. The next prime is 11155267. The reversal of 11155225 is 52255111.

It is a happy number.

11155225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 112896 + 11042329 = 336^2 + 3323^2 .

It is a de Polignac number, because none of the positive numbers 2^k-11155225 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11155196 and 11155205.

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, 1797 + ... + 5053.

It is an arithmetic number, because the mean of its divisors is an integer number (1161477).

Almost surely, 2^11155225 is an apocalyptic number.

It is an amenable number.

11155225 is a deficient number, since it is larger than the sum of its proper divisors (2782499).

11155225 is a wasteful number, since it uses less digits than its factorization.

11155225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3404 (or 3399 counting only the distinct ones).

The product of its digits is 500, while the sum is 22.

The square root of 11155225 is about 3339.9438618037. The cubic root of 11155225 is about 223.4392396396.

It can be divided in two parts, 11 and 155225, that added together give a square (155236 = 394²).

The spelling of 11155225 in words is "eleven million, one hundred fifty-five thousand, two hundred twenty-five".