225665106839 has 2 divisors, whose sum is σ = 225665106840. Its totient is φ = 225665106838.

The previous prime is 225665106811. The next prime is 225665106851. The reversal of 225665106839 is 938601566522.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 225665106839 - 2³⁶ = 156945630103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225665106869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112832553419 + 112832553420.

It is an arithmetic number, because the mean of its divisors is an integer number (112832553420).

Almost surely, 2^225665106839 is an apocalyptic number.

225665106839 is a deficient number, since it is larger than the sum of its proper divisors (1).

225665106839 is an equidigital number, since it uses as much as digits as its factorization.

225665106839 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4665600, while the sum is 53.

The spelling of 225665106839 in words is "two hundred twenty-five billion, six hundred sixty-five million, one hundred six thousand, eight hundred thirty-nine".