8196221825 has 24 divisors (see below), whose sum is σ = 11105985600. Its totient is φ = 5950817600.

The previous prime is 8196221819. The next prime is 8196221827. The reversal of 8196221825 is 5281226918.

It is not a de Polignac number, because 8196221825 - 2⁸ = 8196221569 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8196221827) 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, 139847 + ... + 189603.

It is an arithmetic number, because the mean of its divisors is an integer number (462749400).

Almost surely, 2^8196221825 is an apocalyptic number.

It is an amenable number.

8196221825 is a deficient number, since it is larger than the sum of its proper divisors (2909763775).

8196221825 is a wasteful number, since it uses less digits than its factorization.

8196221825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50377 (or 50372 counting only the distinct ones).

The product of its digits is 138240, while the sum is 44.

The square root of 8196221825 is about 90532.9874962712. The cubic root of 8196221825 is about 2016.2199202411.

The spelling of 8196221825 in words is "eight billion, one hundred ninety-six million, two hundred twenty-one thousand, eight hundred twenty-five".