225662220590897 has 2 divisors, whose sum is σ = 225662220590898. Its totient is φ = 225662220590896.

The previous prime is 225662220590791. The next prime is 225662220590903. The reversal of 225662220590897 is 798095022266522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 126028105298176 + 99634115292721 = 11226224^2 + 9981689^2 .

It is a cyclic number.

It is not a de Polignac number, because 225662220590897 - 2²⁶ = 225662153482033 is a prime.

It is not a weakly prime, because it can be changed into another prime (225662220590197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112831110295448 + 112831110295449.

It is an arithmetic number, because the mean of its divisors is an integer number (112831110295449).

Almost surely, 2^{225662220590897} is an apocalyptic number.

It is an amenable number.

225662220590897 is a deficient number, since it is larger than the sum of its proper divisors (1).

225662220590897 is an equidigital number, since it uses as much as digits as its factorization.

225662220590897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 130636800, while the sum is 65.

The spelling of 225662220590897 in words is "two hundred twenty-five trillion, six hundred sixty-two billion, two hundred twenty million, five hundred ninety thousand, eight hundred ninety-seven".