2565526165 has 16 divisors (see below), whose sum is σ = 3168288000. Its totient is φ = 1992876480.

The previous prime is 2565526153. The next prime is 2565526177. The reversal of 2565526165 is 5616255652.

2565526165 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2565526153) and next prime (2565526177).

It is not a de Polignac number, because 2565526165 - 2²¹ = 2563429013 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78420 + ... + 106210.

It is an arithmetic number, because the mean of its divisors is an integer number (198018000).

Almost surely, 2^2565526165 is an apocalyptic number.

It is an amenable number.

2565526165 is a deficient number, since it is larger than the sum of its proper divisors (602761835).

2565526165 is a wasteful number, since it uses less digits than its factorization.

2565526165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28332.

The product of its digits is 540000, while the sum is 43.

The square root of 2565526165 is about 50651.0233361578. The cubic root of 2565526165 is about 1368.9643842036.

The spelling of 2565526165 in words is "two billion, five hundred sixty-five million, five hundred twenty-six thousand, one hundred sixty-five".