2565059663 has 2 divisors, whose sum is σ = 2565059664. Its totient is φ = 2565059662.

The previous prime is 2565059647. The next prime is 2565059677. The reversal of 2565059663 is 3669505652.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2565059663 - 2⁴ = 2565059647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2565059683) 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, 1282529831 + 1282529832.

It is an arithmetic number, because the mean of its divisors is an integer number (1282529832).

Almost surely, 2^2565059663 is an apocalyptic number.

2565059663 is a deficient number, since it is larger than the sum of its proper divisors (1).

2565059663 is an equidigital number, since it uses as much as digits as its factorization.

2565059663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1458000, while the sum is 47.

The square root of 2565059663 is about 50646.4180668288. The cubic root of 2565059663 is about 1368.8814040410.

The spelling of 2565059663 in words is "two billion, five hundred sixty-five million, fifty-nine thousand, six hundred sixty-three".