6343642625 has 8 divisors (see below), whose sum is σ = 7916866152. Its totient is φ = 5074914000.

The previous prime is 6343642621. The next prime is 6343642661. The reversal of 6343642625 is 5262463436.

6343642625 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 543449344 + 5800193281 = 23312^2 + 76159^2 .

It is not a de Polignac number, because 6343642625 - 2² = 6343642621 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6343642621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25374446 + ... + 25374695.

It is an arithmetic number, because the mean of its divisors is an integer number (989608269).

Almost surely, 2^6343642625 is an apocalyptic number.

It is an amenable number.

6343642625 is a deficient number, since it is larger than the sum of its proper divisors (1573223527).

6343642625 is an equidigital number, since it uses as much as digits as its factorization.

6343642625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50749156 (or 50749146 counting only the distinct ones).

The product of its digits is 622080, while the sum is 41.

The square root of 6343642625 is about 79646.9875450415. The cubic root of 6343642625 is about 1851.1697131463.

The spelling of 6343642625 in words is "six billion, three hundred forty-three million, six hundred forty-two thousand, six hundred twenty-five".