6449659225 has 24 divisors (see below), whose sum is σ = 8237970752. Its totient is φ = 5006232000.

The previous prime is 6449659207. The next prime is 6449659243. The reversal of 6449659225 is 5229569446.

It is an interprime number because it is at equal distance from previous prime (6449659207) and next prime (6449659243).

It is not a de Polignac number, because 6449659225 - 2²¹ = 6447562073 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 142459 + ... + 182191.

Almost surely, 2^6449659225 is an apocalyptic number.

It is an amenable number.

6449659225 is a deficient number, since it is larger than the sum of its proper divisors (1788311527).

6449659225 is a wasteful number, since it uses less digits than its factorization.

6449659225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39937 (or 39932 counting only the distinct ones).

The product of its digits is 4665600, while the sum is 52.

The square root of 6449659225 is about 80309.7704205410. The cubic root of 6449659225 is about 1861.4252021431.

The spelling of 6449659225 in words is "six billion, four hundred forty-nine million, six hundred fifty-nine thousand, two hundred twenty-five".