2545550805 has 32 divisors (see below), whose sum is σ = 4768259328. Its totient is φ = 1135296000.

The previous prime is 2545550803. The next prime is 2545550837. The reversal of 2545550805 is 5080555452.

It is not a de Polignac number, because 2545550805 - 2¹ = 2545550803 is a prime.

It is a super-2 number, since 2×2545550805² = 12959657801672296050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2545550803) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 291346 + ... + 299955.

It is an arithmetic number, because the mean of its divisors is an integer number (149008104).

Almost surely, 2^2545550805 is an apocalyptic number.

It is an amenable number.

2545550805 is a deficient number, since it is larger than the sum of its proper divisors (2222708523).

2545550805 is a wasteful number, since it uses less digits than its factorization.

2545550805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 591357.

The product of its (nonzero) digits is 200000, while the sum is 39.

The square root of 2545550805 is about 50453.4518640697. The cubic root of 2545550805 is about 1365.4021732205.

The spelling of 2545550805 in words is "two billion, five hundred forty-five million, five hundred fifty thousand, eight hundred five".