225522211 has 2 divisors, whose sum is σ = 225522212. Its totient is φ = 225522210.

The previous prime is 225522203. The next prime is 225522217. The reversal of 225522211 is 112225522.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 225522211 - 2³ = 225522203 is a prime.

It is a zygodrome in base 10.

It is not a weakly prime, because it can be changed into another prime (225522217) 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 as a sum of consecutive naturals, namely, 112761105 + 112761106.

It is an arithmetic number, because the mean of its divisors is an integer number (112761106).

Almost surely, 2^225522211 is an apocalyptic number.

225522211 is a deficient number, since it is larger than the sum of its proper divisors (1).

225522211 is an equidigital number, since it uses as much as digits as its factorization.

225522211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 800, while the sum is 22.

The square root of 225522211 is about 15017.3969448770. The cubic root of 225522211 is about 608.6903830686.

Adding to 225522211 its reverse (112225522), we get a palindrome (337747733).

The spelling of 225522211 in words is "two hundred twenty-five million, five hundred twenty-two thousand, two hundred eleven".