8225744409 has 24 divisors (see below), whose sum is σ = 12117865032. Its totient is φ = 5375416320.

The previous prime is 8225744399. The next prime is 8225744431. The reversal of 8225744409 is 9044475228.

It can be written as a sum of positive squares in 4 ways, for example, as 2788156809 + 5437587600 = 52803^2 + 73740^2 .

It is not a de Polignac number, because 8225744409 - 2³² = 3930777113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8225744209) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 135289 + ... + 186425.

It is an arithmetic number, because the mean of its divisors is an integer number (504911043).

Almost surely, 2^8225744409 is an apocalyptic number.

It is an amenable number.

8225744409 is a deficient number, since it is larger than the sum of its proper divisors (3892120623).

8225744409 is a wasteful number, since it uses less digits than its factorization.

8225744409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51497 (or 51494 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

The square root of 8225744409 is about 90695.8897028967. The cubic root of 8225744409 is about 2018.6378105769.

The spelling of 8225744409 in words is "eight billion, two hundred twenty-five million, seven hundred forty-four thousand, four hundred nine".