2522856643 has 2 divisors, whose sum is σ = 2522856644. Its totient is φ = 2522856642.

The previous prime is 2522856641. The next prime is 2522856671. The reversal of 2522856643 is 3466582252.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2522856643 - 2¹ = 2522856641 is a prime.

It is a super-2 number, since 2×2522856643² = 12729611282258458898, which contains 22 as substring.

Together with 2522856641, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2522856643.

It is not a weakly prime, because it can be changed into another prime (2522856641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1261428321 + 1261428322.

It is an arithmetic number, because the mean of its divisors is an integer number (1261428322).

Almost surely, 2^2522856643 is an apocalyptic number.

2522856643 is a deficient number, since it is larger than the sum of its proper divisors (1).

2522856643 is an equidigital number, since it uses as much as digits as its factorization.

2522856643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 691200, while the sum is 43.

The square root of 2522856643 is about 50228.0463784926. The cubic root of 2522856643 is about 1361.3324317163.

The spelling of 2522856643 in words is "two billion, five hundred twenty-two million, eight hundred fifty-six thousand, six hundred forty-three".