2565335693 has 2 divisors, whose sum is σ = 2565335694. Its totient is φ = 2565335692.

The previous prime is 2565335651. The next prime is 2565335699. The reversal of 2565335693 is 3965335652.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2419360969 + 145974724 = 49187^2 + 12082^2 .

It is a cyclic number.

It is not a de Polignac number, because 2565335693 - 2¹⁶ = 2565270157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2565335699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1282667846 + 1282667847.

It is an arithmetic number, because the mean of its divisors is an integer number (1282667847).

Almost surely, 2^2565335693 is an apocalyptic number.

It is an amenable number.

2565335693 is a deficient number, since it is larger than the sum of its proper divisors (1).

2565335693 is an equidigital number, since it uses as much as digits as its factorization.

2565335693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2187000, while the sum is 47.

The square root of 2565335693 is about 50649.1430628397. The cubic root of 2565335693 is about 1368.9305047548.

The spelling of 2565335693 in words is "two billion, five hundred sixty-five million, three hundred thirty-five thousand, six hundred ninety-three".