2545404806 has 64 divisors (see below), whose sum is σ = 4707072000. Its totient is φ = 1008184320.

The previous prime is 2545404793. The next prime is 2545404809. The reversal of 2545404806 is 6084045452.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a self number, because there is not a number n which added to its sum of digits gives 2545404806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2545404809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1869566 + ... + 1870926.

It is an arithmetic number, because the mean of its divisors is an integer number (73548000).

Almost surely, 2^2545404806 is an apocalyptic number.

2545404806 is a deficient number, since it is larger than the sum of its proper divisors (2161667194).

2545404806 is a wasteful number, since it uses less digits than its factorization.

2545404806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1557.

The product of its (nonzero) digits is 153600, while the sum is 38.

The square root of 2545404806 is about 50452.0049750255. The cubic root of 2545404806 is about 1365.3760686982.

The spelling of 2545404806 in words is "two billion, five hundred forty-five million, four hundred four thousand, eight hundred six".