6445756250 has 48 divisors (see below), whose sum is σ = 12342710016. Its totient is φ = 2523330000.

The previous prime is 6445756249. The next prime is 6445756259. The reversal of 6445756250 is 526575446.

It is not an unprimeable number, because it can be changed into a prime (6445756259) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 282779 + ... + 304721.

It is an arithmetic number, because the mean of its divisors is an integer number (257139792).

Almost surely, 2^6445756250 is an apocalyptic number.

6445756250 is a deficient number, since it is larger than the sum of its proper divisors (5896953766).

6445756250 is an equidigital number, since it uses as much as digits as its factorization.

6445756250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22017 (or 21997 counting only the distinct ones).

The product of its (nonzero) digits is 1008000, while the sum is 44.

The square root of 6445756250 is about 80285.4672403418. The cubic root of 6445756250 is about 1861.0496493816.

The spelling of 6445756250 in words is "six billion, four hundred forty-five million, seven hundred fifty-six thousand, two hundred fifty".