2575842665789 has 2 divisors, whose sum is σ = 2575842665790. Its totient is φ = 2575842665788.

The previous prime is 2575842665749. The next prime is 2575842665791. The reversal of 2575842665789 is 9875662485752.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2575758576889 + 84088900 = 1604917^2 + 9170^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2575842665789 is a prime.

Together with 2575842665791, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2575842665749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1287921332894 + 1287921332895.

It is an arithmetic number, because the mean of its divisors is an integer number (1287921332895).

Almost surely, 2^{2575842665789} is an apocalyptic number.

It is an amenable number.

2575842665789 is a deficient number, since it is larger than the sum of its proper divisors (1).

2575842665789 is an equidigital number, since it uses as much as digits as its factorization.

2575842665789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2032128000, while the sum is 74.

The spelling of 2575842665789 in words is "two trillion, five hundred seventy-five billion, eight hundred forty-two million, six hundred sixty-five thousand, seven hundred eighty-nine".