2545566500 has 48 divisors (see below), whose sum is σ = 5564447616. Its totient is φ = 1017324000.

The previous prime is 2545566433. The next prime is 2545566533. The reversal of 2545566500 is 56655452.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1100345 + ... + 1102655.

It is an arithmetic number, because the mean of its divisors is an integer number (115925992).

Almost surely, 2^2545566500 is an apocalyptic number.

2545566500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2545566500 is an abundant number, since it is smaller than the sum of its proper divisors (3018881116).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2545566500 is a wasteful number, since it uses less digits than its factorization.

2545566500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4533 (or 4521 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 38.

The square root of 2545566500 is about 50453.6074032373. The cubic root of 2545566500 is about 1365.4049794164.

The spelling of 2545566500 in words is "two billion, five hundred forty-five million, five hundred sixty-six thousand, five hundred".