205885625219 has 2 divisors, whose sum is σ = 205885625220. Its totient is φ = 205885625218.

The previous prime is 205885625189. The next prime is 205885625221. The reversal of 205885625219 is 912526588502.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-205885625219 is a prime.

It is a super-2 number, since 2×205885625219² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 205885625221, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (205885625249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102942812609 + 102942812610.

It is an arithmetic number, because the mean of its divisors is an integer number (102942812610).

Almost surely, 2^205885625219 is an apocalyptic number.

205885625219 is a deficient number, since it is larger than the sum of its proper divisors (1).

205885625219 is an equidigital number, since it uses as much as digits as its factorization.

205885625219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456000, while the sum is 53.

The spelling of 205885625219 in words is "two hundred five billion, eight hundred eighty-five million, six hundred twenty-five thousand, two hundred nineteen".