2545784872 has 8 divisors (see below), whose sum is σ = 4773346650. Its totient is φ = 1272892432.

The previous prime is 2545784851. The next prime is 2545784873. The reversal of 2545784872 is 2784875452.

2545784872 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 2300737156 + 245047716 = 47966^2 + 15654^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×2545784872² = 12962041229008112768, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2545784873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159111547 + ... + 159111562.

Almost surely, 2^2545784872 is an apocalyptic number.

It is an amenable number.

2545784872 is a deficient number, since it is larger than the sum of its proper divisors (2227561778).

2545784872 is a wasteful number, since it uses less digits than its factorization.

2545784872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318223115 (or 318223111 counting only the distinct ones).

The product of its digits is 5017600, while the sum is 52.

The square root of 2545784872 is about 50455.7714439092. The cubic root of 2545784872 is about 1365.4440221587. Note that the first 3 decimals are identical.

The spelling of 2545784872 in words is "two billion, five hundred forty-five million, seven hundred eighty-four thousand, eight hundred seventy-two".