226525560513221 has 2 divisors, whose sum is σ = 226525560513222. Its totient is φ = 226525560513220.

The previous prime is 226525560513151. The next prime is 226525560513227. The reversal of 226525560513221 is 122315065525622.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 220776834990721 + 5748725522500 = 14858561^2 + 2397650^2 .

It is a cyclic number.

It is not a de Polignac number, because 226525560513221 - 2⁴⁶ = 156156816335557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (226525560513227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113262780256610 + 113262780256611.

It is an arithmetic number, because the mean of its divisors is an integer number (113262780256611).

Almost surely, 2^{226525560513221} is an apocalyptic number.

It is an amenable number.

226525560513221 is a deficient number, since it is larger than the sum of its proper divisors (1).

226525560513221 is an equidigital number, since it uses as much as digits as its factorization.

226525560513221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160000, while the sum is 47.

The spelling of 226525560513221 in words is "two hundred twenty-six trillion, five hundred twenty-five billion, five hundred sixty million, five hundred thirteen thousand, two hundred twenty-one".