6663125529 has 20 divisors (see below), whose sum is σ = 10122269520. Its totient is φ = 4366791000.

The previous prime is 6663125477. The next prime is 6663125593. The reversal of 6663125529 is 9255213666.

6663125529 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 6663125529 - 2⁹ = 6663125017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6663135529) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 692347 + ... + 701904.

It is an arithmetic number, because the mean of its divisors is an integer number (506113476).

Almost surely, 2^6663125529 is an apocalyptic number.

It is an amenable number.

6663125529 is a deficient number, since it is larger than the sum of its proper divisors (3459143991).

6663125529 is a wasteful number, since it uses less digits than its factorization.

6663125529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1394322 (or 1394313 counting only the distinct ones).

The product of its digits is 583200, while the sum is 45.

The square root of 6663125529 is about 81627.9702614245. The cubic root of 6663125529 is about 1881.7387649305.

The spelling of 6663125529 in words is "six billion, six hundred sixty-three million, one hundred twenty-five thousand, five hundred twenty-nine".