2566404427 has 2 divisors, whose sum is σ = 2566404428. Its totient is φ = 2566404426.

The previous prime is 2566404343. The next prime is 2566404437. The reversal of 2566404427 is 7244046652.

2566404427 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2566404427 - 2⁷ = 2566404299 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2566404427.

It is not a weakly prime, because it can be changed into another prime (2566404437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1283202213 + 1283202214.

It is an arithmetic number, because the mean of its divisors is an integer number (1283202214).

Almost surely, 2^2566404427 is an apocalyptic number.

2566404427 is a deficient number, since it is larger than the sum of its proper divisors (1).

2566404427 is an equidigital number, since it uses as much as digits as its factorization.

2566404427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 322560, while the sum is 40.

The square root of 2566404427 is about 50659.6923302935. The cubic root of 2566404427 is about 1369.1205798727.

The spelling of 2566404427 in words is "two billion, five hundred sixty-six million, four hundred four thousand, four hundred twenty-seven".