225594168649 has 2 divisors, whose sum is σ = 225594168650. Its totient is φ = 225594168648.

The previous prime is 225594168551. The next prime is 225594168659. The reversal of 225594168649 is 946861495522.

225594168649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 188622570249 + 36971598400 = 434307^2 + 192280^2 .

It is a cyclic number.

It is not a de Polignac number, because 225594168649 - 2¹⁵ = 225594135881 is a prime.

It is not a weakly prime, because it can be changed into another prime (225594168659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112797084324 + 112797084325.

It is an arithmetic number, because the mean of its divisors is an integer number (112797084325).

Almost surely, 2^225594168649 is an apocalyptic number.

It is an amenable number.

225594168649 is a deficient number, since it is larger than the sum of its proper divisors (1).

225594168649 is an equidigital number, since it uses as much as digits as its factorization.

225594168649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37324800, while the sum is 61.

The spelling of 225594168649 in words is "two hundred twenty-five billion, five hundred ninety-four million, one hundred sixty-eight thousand, six hundred forty-nine".