225006622021 has 2 divisors, whose sum is σ = 225006622022. Its totient is φ = 225006622020.

The previous prime is 225006622019. The next prime is 225006622117. The reversal of 225006622021 is 120226600522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 167353809921 + 57652812100 = 409089^2 + 240110^2 .

It is a cyclic number.

It is not a de Polignac number, because 225006622021 - 2¹ = 225006622019 is a prime.

Together with 225006622019, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225006623021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112503311010 + 112503311011.

It is an arithmetic number, because the mean of its divisors is an integer number (112503311011).

Almost surely, 2^225006622021 is an apocalyptic number.

It is an amenable number.

225006622021 is a deficient number, since it is larger than the sum of its proper divisors (1).

225006622021 is an equidigital number, since it uses as much as digits as its factorization.

225006622021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 28.

The spelling of 225006622021 in words is "two hundred twenty-five billion, six million, six hundred twenty-two thousand, twenty-one".