2545566842 has 32 divisors (see below), whose sum is σ = 4975955712. Its totient is φ = 947798784.

The previous prime is 2545566833. The next prime is 2545566853. The reversal of 2545566842 is 2486655452.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 408278 + ... + 414465.

It is an arithmetic number, because the mean of its divisors is an integer number (155498616).

Almost surely, 2^2545566842 is an apocalyptic number.

2545566842 is a deficient number, since it is larger than the sum of its proper divisors (2430388870).

2545566842 is a wasteful number, since it uses less digits than its factorization.

2545566842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 822782.

The product of its digits is 2304000, while the sum is 47.

The square root of 2545566842 is about 50453.6107924894. The cubic root of 2545566842 is about 1365.4050405644.

The spelling of 2545566842 in words is "two billion, five hundred forty-five million, five hundred sixty-six thousand, eight hundred forty-two".