11222225 has 18 divisors (see below), whose sum is σ = 16189254. Its totient is φ = 7694400.

The previous prime is 11222219. The next prime is 11222243. The reversal of 11222225 is 52222211.

It can be written as a sum of positive squares in 3 ways, for example, as 305809 + 10916416 = 553^2 + 3304^2 .

It is not a de Polignac number, because 11222225 - 2⁴ = 11222209 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is an unprimeable number.

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 17 ways as a sum of consecutive naturals, for example, 3356 + ... + 5805.

It is an arithmetic number, because the mean of its divisors is an integer number (899403).

Almost surely, 2^11222225 is an apocalyptic number.

It is an amenable number.

11222225 is a deficient number, since it is larger than the sum of its proper divisors (4967029).

11222225 is an equidigital number, since it uses as much as digits as its factorization.

11222225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9185 (or 9173 counting only the distinct ones).

The product of its digits is 160, while the sum is 17.

The square root of 11222225 is about 3349.9589549724. The cubic root of 11222225 is about 223.8856838573.

Adding to 11222225 its reverse (52222211), we get a palindrome (63444436).

The spelling of 11222225 in words is "eleven million, two hundred twenty-two thousand, two hundred twenty-five".