6543273725 has 6 divisors (see below), whose sum is σ = 8113659450. Its totient is φ = 5234618960.

The previous prime is 6543273721. The next prime is 6543273743. The reversal of 6543273725 is 5273723456.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 786409849 + 5756863876 = 28043^2 + 75874^2 .

It is not a de Polignac number, because 6543273725 - 2² = 6543273721 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6543273721) 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 5 ways as a sum of consecutive naturals, for example, 130865450 + ... + 130865499.

It is an arithmetic number, because the mean of its divisors is an integer number (1352276575).

Almost surely, 2^6543273725 is an apocalyptic number.

It is an amenable number.

6543273725 is a deficient number, since it is larger than the sum of its proper divisors (1570385725).

6543273725 is a wasteful number, since it uses less digits than its factorization.

6543273725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261730959 (or 261730954 counting only the distinct ones).

The product of its digits is 1058400, while the sum is 44.

The square root of 6543273725 is about 80890.5045416333. The cubic root of 6543273725 is about 1870.3879512904.

The spelling of 6543273725 in words is "six billion, five hundred forty-three million, two hundred seventy-three thousand, seven hundred twenty-five".