225221153 has 2 divisors, whose sum is σ = 225221154. Its totient is φ = 225221152.

The previous prime is 225221149. The next prime is 225221177. The reversal of 225221153 is 351122522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 130119649 + 95101504 = 11407^2 + 9752^2 .

It is a cyclic number.

It is not a de Polignac number, because 225221153 - 2² = 225221149 is a prime.

It is not a weakly prime, because it can be changed into another prime (225221123) 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, 112610576 + 112610577.

It is an arithmetic number, because the mean of its divisors is an integer number (112610577).

Almost surely, 2^225221153 is an apocalyptic number.

It is an amenable number.

225221153 is a deficient number, since it is larger than the sum of its proper divisors (1).

225221153 is an equidigital number, since it uses as much as digits as its factorization.

225221153 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1200, while the sum is 23.

The square root of 225221153 is about 15007.3699561249. The cubic root of 225221153 is about 608.4194079660.

Adding to 225221153 its reverse (351122522), we get a palindrome (576343675).

The spelling of 225221153 in words is "two hundred twenty-five million, two hundred twenty-one thousand, one hundred fifty-three".