2565320325 has 24 divisors (see below), whose sum is σ = 4242951648. Its totient is φ = 1367647680.

The previous prime is 2565320279. The next prime is 2565320333. The reversal of 2565320325 is 5230235652.

It is not a de Polignac number, because 2565320325 - 2¹¹ = 2565318277 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 266242 + ... + 275708.

It is an arithmetic number, because the mean of its divisors is an integer number (176789652).

Almost surely, 2^2565320325 is an apocalyptic number.

2565320325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2565320325 is a deficient number, since it is larger than the sum of its proper divisors (1677631323).

2565320325 is a wasteful number, since it uses less digits than its factorization.

2565320325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13093 (or 13088 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 33.

The square root of 2565320325 is about 50648.9913522471. The cubic root of 2565320325 is about 1368.9277711598.

Adding to 2565320325 its reverse (5230235652), we get a palindrome (7795555977).

The spelling of 2565320325 in words is "two billion, five hundred sixty-five million, three hundred twenty thousand, three hundred twenty-five".