205089325087 has 2 divisors, whose sum is σ = 205089325088. Its totient is φ = 205089325086.

The previous prime is 205089325043. The next prime is 205089325139. The reversal of 205089325087 is 780523980502.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 205089325087 - 2²⁷ = 204955107359 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 205089325087.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (205089325487) 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, 102544662543 + 102544662544.

It is an arithmetic number, because the mean of its divisors is an integer number (102544662544).

Almost surely, 2^205089325087 is an apocalyptic number.

205089325087 is a deficient number, since it is larger than the sum of its proper divisors (1).

205089325087 is an equidigital number, since it uses as much as digits as its factorization.

205089325087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1209600, while the sum is 49.

The spelling of 205089325087 in words is "two hundred five billion, eighty-nine million, three hundred twenty-five thousand, eighty-seven".