6449500225 has 12 divisors (see below), whose sum is σ = 9139863424. Its totient is φ = 4422514320.

The previous prime is 6449500193. The next prime is 6449500237. The reversal of 6449500225 is 5220059446.

It is not a de Polignac number, because 6449500225 - 2⁵ = 6449500193 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18426969 + ... + 18427318.

Almost surely, 2^6449500225 is an apocalyptic number.

It is an amenable number.

6449500225 is a deficient number, since it is larger than the sum of its proper divisors (2690363199).

6449500225 is a wasteful number, since it uses less digits than its factorization.

6449500225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36854304 (or 36854299 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 37.

The square root of 6449500225 is about 80308.7804975272. The cubic root of 6449500225 is about 1861.4099057773.

The spelling of 6449500225 in words is "six billion, four hundred forty-nine million, five hundred thousand, two hundred twenty-five".