2565002399 has 2 divisors, whose sum is σ = 2565002400. Its totient is φ = 2565002398.

The previous prime is 2565002329. The next prime is 2565002437. The reversal of 2565002399 is 9932005652.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2565002399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2565002329) 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, 1282501199 + 1282501200.

It is an arithmetic number, because the mean of its divisors is an integer number (1282501200).

Almost surely, 2^2565002399 is an apocalyptic number.

2565002399 is a deficient number, since it is larger than the sum of its proper divisors (1).

2565002399 is an equidigital number, since it uses as much as digits as its factorization.

2565002399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145800, while the sum is 41.

The square root of 2565002399 is about 50645.8527324795. The cubic root of 2565002399 is about 1368.8712173763.

The spelling of 2565002399 in words is "two billion, five hundred sixty-five million, two thousand, three hundred ninety-nine".