6449719025 has 12 divisors (see below), whose sum is σ = 8016135372. Its totient is φ = 5147850240.

The previous prime is 6449719019. The next prime is 6449719037. The reversal of 6449719025 is 5209179446.

It can be written as a sum of positive squares in 6 ways, for example, as 1135892209 + 5313826816 = 33703^2 + 72896^2 .

It is not a de Polignac number, because 6449719025 - 2¹⁶ = 6449653489 is a prime.

It is a super-4 number, since 4×6449719025⁴ (a number of 40 digits) contains 4444 as substring.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 287084 + ... + 308733.

It is an arithmetic number, because the mean of its divisors is an integer number (668011281).

Almost surely, 2^6449719025 is an apocalyptic number.

It is an amenable number.

6449719025 is a deficient number, since it is larger than the sum of its proper divisors (1566416347).

6449719025 is a wasteful number, since it uses less digits than its factorization.

6449719025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 596260 (or 596255 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 47.

The square root of 6449719025 is about 80310.1427280515. The cubic root of 6449719025 is about 1861.4309550508.

The spelling of 6449719025 in words is "six billion, four hundred forty-nine million, seven hundred nineteen thousand, twenty-five".