2565005423 has 2 divisors, whose sum is σ = 2565005424. Its totient is φ = 2565005422.

The previous prime is 2565005389. The next prime is 2565005447. The reversal of 2565005423 is 3245005652.

2565005423 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 2565005423 - 2⁸ = 2565005167 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2565005423.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2565005123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1282502711 + 1282502712.

It is an arithmetic number, because the mean of its divisors is an integer number (1282502712).

Almost surely, 2^2565005423 is an apocalyptic number.

2565005423 is a deficient number, since it is larger than the sum of its proper divisors (1).

2565005423 is an equidigital number, since it uses as much as digits as its factorization.

2565005423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36000, while the sum is 32.

The square root of 2565005423 is about 50645.8825868402. The cubic root of 2565005423 is about 1368.8717553180.

The spelling of 2565005423 in words is "two billion, five hundred sixty-five million, five thousand, four hundred twenty-three".