2565365685 has 32 divisors (see below), whose sum is σ = 4150586880. Its totient is φ = 1352913408.

The previous prime is 2565365669. The next prime is 2565365687. The reversal of 2565365685 is 5865635652.

It is not a de Polignac number, because 2565365685 - 2⁴ = 2565365669 is a prime.

It is a super-2 number, since 2×2565365685² = 13162202195551038450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2565365687) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1007524 + ... + 1010066.

It is an arithmetic number, because the mean of its divisors is an integer number (129705840).

Almost surely, 2^2565365685 is an apocalyptic number.

It is an amenable number.

2565365685 is a deficient number, since it is larger than the sum of its proper divisors (1585221195).

2565365685 is a wasteful number, since it uses less digits than its factorization.

2565365685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3277.

The product of its digits is 6480000, while the sum is 51.

The square root of 2565365685 is about 50649.4391380596. The cubic root of 2565365685 is about 1368.9358395736.

The spelling of 2565365685 in words is "two billion, five hundred sixty-five million, three hundred sixty-five thousand, six hundred eighty-five".