2565332017 has 4 divisors (see below), whose sum is σ = 2565552420. Its totient is φ = 2565111616.

The previous prime is 2565331991. The next prime is 2565332039. The reversal of 2565332017 is 7102335652.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3352561 + 2561979456 = 1831^2 + 50616^2 .

It is a cyclic number.

It is not a de Polignac number, because 2565332017 - 2⁷ = 2565331889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2565332047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91708 + ... + 116365.

It is an arithmetic number, because the mean of its divisors is an integer number (641388105).

Almost surely, 2^2565332017 is an apocalyptic number.

It is an amenable number.

2565332017 is a deficient number, since it is larger than the sum of its proper divisors (220403).

2565332017 is a wasteful number, since it uses less digits than its factorization.

2565332017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220402.

The product of its (nonzero) digits is 37800, while the sum is 34.

The square root of 2565332017 is about 50649.1067739600. The cubic root of 2565332017 is about 1368.9298508844.

Adding to 2565332017 its reverse (7102335652), we get a palindrome (9667667669).

The spelling of 2565332017 in words is "two billion, five hundred sixty-five million, three hundred thirty-two thousand, seventeen".