8520632505 has 192 divisors, whose sum is σ = 19384275456. Its totient is φ = 3359232000.

The previous prime is 8520632467. The next prime is 8520632507. The reversal of 8520632505 is 5052360258.

It is a happy number.

It is not a de Polignac number, because 8520632505 - 2¹⁸ = 8520370361 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 8520632505.

It is not an unprimeable number, because it can be changed into a prime (8520632507) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 5255595 + ... + 5257215.

It is an arithmetic number, because the mean of its divisors is an integer number (100959768).

Almost surely, 2^8520632505 is an apocalyptic number.

It is an amenable number.

8520632505 is an abundant number, since it is smaller than the sum of its proper divisors (10863642951).

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

8520632505 is a wasteful number, since it uses less digits than its factorization.

8520632505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1728 (or 1725 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The square root of 8520632505 is about 92307.2722216403. The cubic root of 8520632505 is about 2042.4774866717.

It can be divided in two parts, 85206 and 32505, that added together give a palindrome (117711).

The spelling of 8520632505 in words is "eight billion, five hundred twenty million, six hundred thirty-two thousand, five hundred five".