208208225287 has 2 divisors, whose sum is σ = 208208225288. Its totient is φ = 208208225286.

The previous prime is 208208225273. The next prime is 208208225299. The reversal of 208208225287 is 782522802802.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 208208225287 - 2¹⁹ = 208207700999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (208208225227) 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, 104104112643 + 104104112644.

It is an arithmetic number, because the mean of its divisors is an integer number (104104112644).

Almost surely, 2^208208225287 is an apocalyptic number.

208208225287 is a deficient number, since it is larger than the sum of its proper divisors (1).

208208225287 is an equidigital number, since it uses as much as digits as its factorization.

208208225287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 573440, while the sum is 46.

The spelling of 208208225287 in words is "two hundred eight billion, two hundred eight million, two hundred twenty-five thousand, two hundred eighty-seven".