8159225436 has 72 divisors (see below), whose sum is σ = 21631113504. Its totient is φ = 2588234880.

The previous prime is 8159225407. The next prime is 8159225449. The reversal of 8159225436 is 6345229518.

8159225436 is a `hidden beast` number, since 8 + 1 + 592 + 2 + 54 + 3 + 6 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 8159225391 and 8159225400.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 138106 + ... + 188126.

It is an arithmetic number, because the mean of its divisors is an integer number (300432132).

Almost surely, 2^8159225436 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 8159225436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10815556752).

8159225436 is an abundant number, since it is smaller than the sum of its proper divisors (13471888068).

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

8159225436 is a wasteful number, since it uses less digits than its factorization.

8159225436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50251 (or 50246 counting only the distinct ones).

The product of its digits is 518400, while the sum is 45.

The square root of 8159225436 is about 90328.4309395442. The cubic root of 8159225436 is about 2013.1817166379.

The spelling of 8159225436 in words is "eight billion, one hundred fifty-nine million, two hundred twenty-five thousand, four hundred thirty-six".