225554253817 has 2 divisors, whose sum is σ = 225554253818. Its totient is φ = 225554253816.

The previous prime is 225554253803. The next prime is 225554253853. The reversal of 225554253817 is 718352455522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 200700416016 + 24853837801 = 447996^2 + 157651^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225554253817 is a prime.

It is not a weakly prime, because it can be changed into another prime (225554253887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112777126908 + 112777126909.

It is an arithmetic number, because the mean of its divisors is an integer number (112777126909).

Almost surely, 2^225554253817 is an apocalyptic number.

It is an amenable number.

225554253817 is a deficient number, since it is larger than the sum of its proper divisors (1).

225554253817 is an equidigital number, since it uses as much as digits as its factorization.

225554253817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3360000, while the sum is 49.

The spelling of 225554253817 in words is "two hundred twenty-five billion, five hundred fifty-four million, two hundred fifty-three thousand, eight hundred seventeen".