8550625640 has 64 divisors (see below), whose sum is σ = 19960290000. Its totient is φ = 3292692480.

The previous prime is 8550625639. The next prime is 8550625687. The reversal of 8550625640 is 465260558.

It can be written as a sum of positive squares in 8 ways, for example, as 5813452516 + 2737173124 = 76246^2 + 52318^2 .

It is a super-2 number, since 2×8550625640² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 394280 + ... + 415400.

Almost surely, 2^8550625640 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 8550625640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9980145000).

8550625640 is an abundant number, since it is smaller than the sum of its proper divisors (11409664360).

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

8550625640 is a wasteful number, since it uses less digits than its factorization.

8550625640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21510 (or 21506 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 41.

The square root of 8550625640 is about 92469.5930563123. The cubic root of 8550625640 is about 2044.8712277162.

The spelling of 8550625640 in words is "eight billion, five hundred fifty million, six hundred twenty-five thousand, six hundred forty".