205255254797 has 2 divisors, whose sum is σ = 205255254798. Its totient is φ = 205255254796.

The previous prime is 205255254767. The next prime is 205255254839. The reversal of 205255254797 is 797452552502.

205255254797 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 163744859716 + 41510395081 = 404654^2 + 203741^2 .

It is a cyclic number.

It is not a de Polignac number, because 205255254797 - 2⁶ = 205255254733 is a prime.

It is a super-2 number, since 2×205255254797² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (205255254767) 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, 102627627398 + 102627627399.

It is an arithmetic number, because the mean of its divisors is an integer number (102627627399).

Almost surely, 2^205255254797 is an apocalyptic number.

It is an amenable number.

205255254797 is a deficient number, since it is larger than the sum of its proper divisors (1).

205255254797 is an equidigital number, since it uses as much as digits as its factorization.

205255254797 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8820000, while the sum is 53.

The spelling of 205255254797 in words is "two hundred five billion, two hundred fifty-five million, two hundred fifty-four thousand, seven hundred ninety-seven".