6499925219 has 2 divisors, whose sum is σ = 6499925220. Its totient is φ = 6499925218.

The previous prime is 6499925171. The next prime is 6499925221. The reversal of 6499925219 is 9125299946.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6499925219 is a prime.

It is a super-2 number, since 2×6499925219² = 84498055705184395922, which contains 22 as substring.

Together with 6499925221, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6499925269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3249962609 + 3249962610.

It is an arithmetic number, because the mean of its divisors is an integer number (3249962610).

Almost surely, 2^6499925219 is an apocalyptic number.

6499925219 is a deficient number, since it is larger than the sum of its proper divisors (1).

6499925219 is an equidigital number, since it uses as much as digits as its factorization.

6499925219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3149280, while the sum is 56.

The square root of 6499925219 is about 80622.1137095772. The cubic root of 6499925219 is about 1866.2484214346.

The spelling of 6499925219 in words is "six billion, four hundred ninety-nine million, nine hundred twenty-five thousand, two hundred nineteen".