2565528349 has 16 divisors (see below), whose sum is σ = 2675151360. Its totient is φ = 2457722880.

The previous prime is 2565528341. The next prime is 2565528359. The reversal of 2565528349 is 9438255652.

It is a cyclic number.

It is not a de Polignac number, because 2565528349 - 2³ = 2565528341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2565528341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1357197 + ... + 1359085.

It is an arithmetic number, because the mean of its divisors is an integer number (167196960).

Almost surely, 2^2565528349 is an apocalyptic number.

It is an amenable number.

2565528349 is a deficient number, since it is larger than the sum of its proper divisors (109623011).

2565528349 is a wasteful number, since it uses less digits than its factorization.

2565528349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2340.

The product of its digits is 2592000, while the sum is 49.

The square root of 2565528349 is about 50651.0448954412. The cubic root of 2565528349 is about 1368.9647726642.

The spelling of 2565528349 in words is "two billion, five hundred sixty-five million, five hundred twenty-eight thousand, three hundred forty-nine".