205255254839 has 2 divisors, whose sum is σ = 205255254840. Its totient is φ = 205255254838.

The previous prime is 205255254797. The next prime is 205255254871. The reversal of 205255254839 is 938452552502.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 205255254839 - 2¹⁶ = 205255189303 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (205255253839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102627627419 + 102627627420.

It is an arithmetic number, because the mean of its divisors is an integer number (102627627420).

Almost surely, 2^205255254839 is an apocalyptic number.

205255254839 is a deficient number, since it is larger than the sum of its proper divisors (1).

205255254839 is an equidigital number, since it uses as much as digits as its factorization.

205255254839 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320000, while the sum is 50.

The spelling of 205255254839 in words is "two hundred five billion, two hundred fifty-five million, two hundred fifty-four thousand, eight hundred thirty-nine".