2564563427 has 2 divisors, whose sum is σ = 2564563428. Its totient is φ = 2564563426.

The previous prime is 2564563343. The next prime is 2564563459. The reversal of 2564563427 is 7243654652.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2564563427 - 2¹² = 2564559331 is a prime.

It is a super-2 number, since 2×2564563427² = 13153971142211968658, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2564563327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1282281713 + 1282281714.

It is an arithmetic number, because the mean of its divisors is an integer number (1282281714).

Almost surely, 2^2564563427 is an apocalyptic number.

2564563427 is a deficient number, since it is larger than the sum of its proper divisors (1).

2564563427 is an equidigital number, since it uses as much as digits as its factorization.

2564563427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1209600, while the sum is 44.

The square root of 2564563427 is about 50641.5188062128. The cubic root of 2564563427 is about 1368.7931238278.

The spelling of 2564563427 in words is "two billion, five hundred sixty-four million, five hundred sixty-three thousand, four hundred twenty-seven".