225212623334521 has 2 divisors, whose sum is σ = 225212623334522. Its totient is φ = 225212623334520.

The previous prime is 225212623334509. The next prime is 225212623334527. The reversal of 225212623334521 is 125433326212522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 197515927889296 + 27696695445225 = 14054036^2 + 5262765^2 .

It is a cyclic number.

It is not a de Polignac number, because 225212623334521 - 2³⁹ = 224662867520633 is a prime.

It is not a weakly prime, because it can be changed into another prime (225212623334527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112606311667260 + 112606311667261.

It is an arithmetic number, because the mean of its divisors is an integer number (112606311667261).

Almost surely, 2^{225212623334521} is an apocalyptic number.

It is an amenable number.

225212623334521 is a deficient number, since it is larger than the sum of its proper divisors (1).

225212623334521 is an equidigital number, since it uses as much as digits as its factorization.

225212623334521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1036800, while the sum is 43.

The spelling of 225212623334521 in words is "two hundred twenty-five trillion, two hundred twelve billion, six hundred twenty-three million, three hundred thirty-four thousand, five hundred twenty-one".