225059221 has 2 divisors, whose sum is σ = 225059222. Its totient is φ = 225059220.

The previous prime is 225059189. The next prime is 225059293. The reversal of 225059221 is 122950522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 208947025 + 16112196 = 14455^2 + 4014^2 .

It is a cyclic number.

It is not a de Polignac number, because 225059221 - 2⁵ = 225059189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 225059221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225059521) 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, 112529610 + 112529611.

It is an arithmetic number, because the mean of its divisors is an integer number (112529611).

Almost surely, 2^225059221 is an apocalyptic number.

It is an amenable number.

225059221 is a deficient number, since it is larger than the sum of its proper divisors (1).

225059221 is an equidigital number, since it uses as much as digits as its factorization.

225059221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 225059221 is about 15001.9739034568. The cubic root of 225059221 is about 608.2735569629.

The spelling of 225059221 in words is "two hundred twenty-five million, fifty-nine thousand, two hundred twenty-one".