8225891388 has 576 divisors, whose sum is σ = 28304908800. Its totient is φ = 2030469120.

The previous prime is 8225891329. The next prime is 8225891417. The reversal of 8225891388 is 8831985228.

8225891388 is a `hidden beast` number, since 8 + 2 + 258 + 9 + 1 + 388 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 84802956 + ... + 84803052.

Almost surely, 2^8225891388 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8225891388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14152454400).

8225891388 is an abundant number, since it is smaller than the sum of its proper divisors (20079017412).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8225891388 is a wasteful number, since it uses less digits than its factorization.

8225891388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187 (or 162 counting only the distinct ones).

The product of its digits is 2211840, while the sum is 54.

The square root of 8225891388 is about 90696.6999840678. The cubic root of 8225891388 is about 2018.6498336265.

The spelling of 8225891388 in words is "eight billion, two hundred twenty-five million, eight hundred ninety-one thousand, three hundred eighty-eight".