6563475725 has 6 divisors (see below), whose sum is σ = 8138709930. Its totient is φ = 5250780560.

The previous prime is 6563475679. The next prime is 6563475727. The reversal of 6563475725 is 5275743656.

It can be written as a sum of positive squares in 3 ways, for example, as 2291153956 + 4272321769 = 47866^2 + 65363^2 .

It is not a de Polignac number, because 6563475725 - 2²⁰ = 6562427149 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6563475727) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 131269490 + ... + 131269539.

It is an arithmetic number, because the mean of its divisors is an integer number (1356451655).

Almost surely, 2^6563475725 is an apocalyptic number.

It is an amenable number.

6563475725 is a deficient number, since it is larger than the sum of its proper divisors (1575234205).

6563475725 is a wasteful number, since it uses less digits than its factorization.

6563475725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262539039 (or 262539034 counting only the distinct ones).

The product of its digits is 5292000, while the sum is 50.

The square root of 6563475725 is about 81015.2808117086. The cubic root of 6563475725 is about 1872.3108805239.

The spelling of 6563475725 in words is "six billion, five hundred sixty-three million, four hundred seventy-five thousand, seven hundred twenty-five".