2565366667 has 2 divisors, whose sum is σ = 2565366668. Its totient is φ = 2565366666.

The previous prime is 2565366647. The next prime is 2565366673. The reversal of 2565366667 is 7666635652.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2565366667 - 2⁷ = 2565366539 is a prime.

It is a super-2 number, since 2×2565366667² = 13162212272309377778, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2565366607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1282683333 + 1282683334.

It is an arithmetic number, because the mean of its divisors is an integer number (1282683334).

Almost surely, 2^2565366667 is an apocalyptic number.

2565366667 is a deficient number, since it is larger than the sum of its proper divisors (1).

2565366667 is an equidigital number, since it uses as much as digits as its factorization.

2565366667 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8164800, while the sum is 52.

The square root of 2565366667 is about 50649.4488321443. The cubic root of 2565366667 is about 1368.9360142459.

The spelling of 2565366667 in words is "two billion, five hundred sixty-five million, three hundred sixty-six thousand, six hundred sixty-seven".