6544425975 has 12 divisors (see below), whose sum is σ = 10820117736. Its totient is φ = 3490360480.

The previous prime is 6544425967. The next prime is 6544425977. The reversal of 6544425975 is 5795244456.

It is a happy number.

6544425975 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6544425975 - 2³ = 6544425967 is a prime.

It is a super-3 number, since 3×6544425975³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6544425977) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43629432 + ... + 43629581.

It is an arithmetic number, because the mean of its divisors is an integer number (901676478).

Almost surely, 2^6544425975 is an apocalyptic number.

6544425975 is a deficient number, since it is larger than the sum of its proper divisors (4275691761).

6544425975 is a wasteful number, since it uses less digits than its factorization.

6544425975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87259026 (or 87259021 counting only the distinct ones).

The product of its digits is 6048000, while the sum is 51.

The square root of 6544425975 is about 80897.6265103000. The cubic root of 6544425975 is about 1870.4977346656.

It can be divided in two parts, 65444 and 25975, that added together give a palindrome (91419).

The spelling of 6544425975 in words is "six billion, five hundred forty-four million, four hundred twenty-five thousand, nine hundred seventy-five".