225842213 has 2 divisors, whose sum is σ = 225842214. Its totient is φ = 225842212.

The previous prime is 225842209. The next prime is 225842219. The reversal of 225842213 is 312248522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 213218404 + 12623809 = 14602^2 + 3553^2 .

It is a cyclic number.

It is not a de Polignac number, because 225842213 - 2² = 225842209 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225842219) 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, 112921106 + 112921107.

It is an arithmetic number, because the mean of its divisors is an integer number (112921107).

Almost surely, 2^225842213 is an apocalyptic number.

It is an amenable number.

225842213 is a deficient number, since it is larger than the sum of its proper divisors (1).

225842213 is an equidigital number, since it uses as much as digits as its factorization.

225842213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7680, while the sum is 29.

The square root of 225842213 is about 15028.0475445082. The cubic root of 225842213 is about 608.9781449462.

The spelling of 225842213 in words is "two hundred twenty-five million, eight hundred forty-two thousand, two hundred thirteen".