2565344536 has 16 divisors (see below), whose sum is σ = 4827774240. Its totient is φ = 1277938080.

The previous prime is 2565344533. The next prime is 2565344543. The reversal of 2565344536 is 6354435652.

It is a junction number, because it is equal to n+sod(n) for n = 2565344492 and 2565344501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2565344533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 589471 + ... + 593806.

It is an arithmetic number, because the mean of its divisors is an integer number (301735890).

Almost surely, 2^2565344536 is an apocalyptic number.

It is an amenable number.

2565344536 is a deficient number, since it is larger than the sum of its proper divisors (2262429704).

2565344536 is a wasteful number, since it uses less digits than its factorization.

2565344536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1183554 (or 1183550 counting only the distinct ones).

The product of its digits is 1296000, while the sum is 43.

The square root of 2565344536 is about 50649.2303594043. The cubic root of 2565344536 is about 1368.9320777053.

The spelling of 2565344536 in words is "two billion, five hundred sixty-five million, three hundred forty-four thousand, five hundred thirty-six".