6466475882225 has 6 divisors (see below), whose sum is σ = 8018430093990. Its totient is φ = 5173180705760.

The previous prime is 6466475882221. The next prime is 6466475882239. The reversal of 6466475882225 is 5222885746646.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 493476745441 + 5972999136784 = 702479^2 + 2443972^2 .

It is not a de Polignac number, because 6466475882225 - 2² = 6466475882221 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6466475882221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 129329517620 + ... + 129329517669.

It is an arithmetic number, because the mean of its divisors is an integer number (1336405015665).

Almost surely, 2^{6466475882225} is an apocalyptic number.

It is an amenable number.

6466475882225 is a deficient number, since it is larger than the sum of its proper divisors (1551954211765).

6466475882225 is a wasteful number, since it uses less digits than its factorization.

6466475882225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258659035299 (or 258659035294 counting only the distinct ones).

The product of its digits is 309657600, while the sum is 65.

The spelling of 6466475882225 in words is "six trillion, four hundred sixty-six billion, four hundred seventy-five million, eight hundred eighty-two thousand, two hundred twenty-five".