6669532225 has 12 divisors (see below), whose sum is σ = 8756704044. Its totient is φ = 5021765120.

The previous prime is 6669532223. The next prime is 6669532237. The reversal of 6669532225 is 5222359666.

It can be written as a sum of positive squares in 6 ways, for example, as 141538609 + 6527993616 = 11897^2 + 80796^2 .

It is not a de Polignac number, because 6669532225 - 2¹ = 6669532223 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6669532223) 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, 7846084 + ... + 7846933.

It is an arithmetic number, because the mean of its divisors is an integer number (729725337).

Almost surely, 2^6669532225 is an apocalyptic number.

It is an amenable number.

6669532225 is a deficient number, since it is larger than the sum of its proper divisors (2087171819).

6669532225 is a wasteful number, since it uses less digits than its factorization.

6669532225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15693044 (or 15693039 counting only the distinct ones).

The product of its digits is 1166400, while the sum is 46.

The square root of 6669532225 is about 81667.2040968711. The cubic root of 6669532225 is about 1882.3416784985.

The spelling of 6669532225 in words is "six billion, six hundred sixty-nine million, five hundred thirty-two thousand, two hundred twenty-five".