2565772885289 has 2 divisors, whose sum is σ = 2565772885290. Its totient is φ = 2565772885288.

The previous prime is 2565772885279. The next prime is 2565772885373. The reversal of 2565772885289 is 9825882775652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2414891136064 + 150881749225 = 1553992^2 + 388435^2 .

It is a cyclic number.

It is not a de Polignac number, because 2565772885289 - 2²⁴ = 2565756108073 is a prime.

It is a super-2 number, since 2×2565772885289² (a number of 26 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2565772885259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1282886442644 + 1282886442645.

It is an arithmetic number, because the mean of its divisors is an integer number (1282886442645).

Almost surely, 2^{2565772885289} is an apocalyptic number.

It is an amenable number.

2565772885289 is a deficient number, since it is larger than the sum of its proper divisors (1).

2565772885289 is an equidigital number, since it uses as much as digits as its factorization.

2565772885289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1354752000, while the sum is 74.

The spelling of 2565772885289 in words is "two trillion, five hundred sixty-five billion, seven hundred seventy-two million, eight hundred eighty-five thousand, two hundred eighty-nine".