8538225720 has 32 divisors (see below), whose sum is σ = 25614677520. Its totient is φ = 2276860160.

The previous prime is 8538225697. The next prime is 8538225721. The reversal of 8538225720 is 275228358.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8538225721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35575821 + ... + 35576060.

Almost surely, 2^8538225720 is an apocalyptic number.

It is an amenable number.

8538225720 is an abundant number, since it is smaller than the sum of its proper divisors (17076451800).

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

8538225720 is a wasteful number, since it uses less digits than its factorization.

8538225720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71151895 (or 71151891 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 42.

The square root of 8538225720 is about 92402.5200955039. The cubic root of 8538225720 is about 2043.8822744864.

The spelling of 8538225720 in words is "eight billion, five hundred thirty-eight million, two hundred twenty-five thousand, seven hundred twenty".