6448842225 has 216 divisors, whose sum is σ = 14036934912. Its totient is φ = 2819577600.

The previous prime is 6448842209. The next prime is 6448842227. The reversal of 6448842225 is 5222488446.

It is not a de Polignac number, because 6448842225 - 2⁴ = 6448842209 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (6448842227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 28918464 + ... + 28918686.

Almost surely, 2^6448842225 is an apocalyptic number.

It is an amenable number.

6448842225 is an abundant number, since it is smaller than the sum of its proper divisors (7588092687).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6448842225 is a wasteful number, since it uses less digits than its factorization.

6448842225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357 (or 342 counting only the distinct ones).

The product of its digits is 983040, while the sum is 45.

The square root of 6448842225 is about 80304.6837052485. The cubic root of 6448842225 is about 1861.3466011630.

The spelling of 6448842225 in words is "six billion, four hundred forty-eight million, eight hundred forty-two thousand, two hundred twenty-five".