2545564156 has 24 divisors (see below), whose sum is σ = 4720370256. Its totient is φ = 1197000960.

The previous prime is 2545564111. The next prime is 2545564157. The reversal of 2545564156 is 6514655452.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2545564157) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80355 + ... + 107461.

It is an arithmetic number, because the mean of its divisors is an integer number (196682094).

Almost surely, 2^2545564156 is an apocalyptic number.

It is an amenable number.

2545564156 is a deficient number, since it is larger than the sum of its proper divisors (2174806100).

2545564156 is a wasteful number, since it uses less digits than its factorization.

2545564156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28509 (or 28507 counting only the distinct ones).

The product of its digits is 720000, while the sum is 43.

The square root of 2545564156 is about 50453.5841739712. The cubic root of 2545564156 is about 1365.4045603204.

The spelling of 2545564156 in words is "two billion, five hundred forty-five million, five hundred sixty-four thousand, one hundred fifty-six".