11291225 has 24 divisors (see below), whose sum is σ = 16085280. Its totient is φ = 7776000.

The previous prime is 11291221. The next prime is 11291249. The reversal of 11291225 is 52219211.

It is not a de Polignac number, because 11291225 - 2² = 11291221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11291225.

It is not an unprimeable number, because it can be changed into a prime (11291221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4145 + ... + 6305.

It is an arithmetic number, because the mean of its divisors is an integer number (670220).

Almost surely, 2^11291225 is an apocalyptic number.

It is an amenable number.

11291225 is a deficient number, since it is larger than the sum of its proper divisors (4794055).

11291225 is a wasteful number, since it uses less digits than its factorization.

11291225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2201 (or 2196 counting only the distinct ones).

The product of its digits is 360, while the sum is 23.

The square root of 11291225 is about 3360.2418067752. The cubic root of 11291225 is about 224.3436013356.

The spelling of 11291225 in words is "eleven million, two hundred ninety-one thousand, two hundred twenty-five".