2565280667 has 2 divisors, whose sum is σ = 2565280668. Its totient is φ = 2565280666.

The previous prime is 2565280631. The next prime is 2565280681. The reversal of 2565280667 is 7660825652.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2565280667 - 2¹⁰ = 2565279643 is a prime.

It is not a weakly prime, because it can be changed into another prime (2565280967) 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, 1282640333 + 1282640334.

It is an arithmetic number, because the mean of its divisors is an integer number (1282640334).

Almost surely, 2^2565280667 is an apocalyptic number.

2565280667 is a deficient number, since it is larger than the sum of its proper divisors (1).

2565280667 is an equidigital number, since it uses as much as digits as its factorization.

2565280667 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 47.

The square root of 2565280667 is about 50648.5998523158. The cubic root of 2565280667 is about 1368.9207169118.

The spelling of 2565280667 in words is "two billion, five hundred sixty-five million, two hundred eighty thousand, six hundred sixty-seven".