2565736156 has 6 divisors (see below), whose sum is σ = 4490038280. Its totient is φ = 1282868076.

The previous prime is 2565736153. The next prime is 2565736163. The reversal of 2565736156 is 6516375652.

2565736156 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2565736153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320717016 + ... + 320717023.

Almost surely, 2^2565736156 is an apocalyptic number.

It is an amenable number.

2565736156 is a deficient number, since it is larger than the sum of its proper divisors (1924302124).

2565736156 is a wasteful number, since it uses less digits than its factorization.

2565736156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641434043 (or 641434041 counting only the distinct ones).

The product of its digits is 1134000, while the sum is 46.

The square root of 2565736156 is about 50653.0962133609. The cubic root of 2565736156 is about 1369.0017335735.

The spelling of 2565736156 in words is "two billion, five hundred sixty-five million, seven hundred thirty-six thousand, one hundred fifty-six".