8272505521 has 8 divisors (see below), whose sum is σ = 9455940864. Its totient is φ = 7089482400.

The previous prime is 8272505497. The next prime is 8272505531. The reversal of 8272505521 is 1255052728.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8272505521 - 2⁷ = 8272505393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8272505531) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 58780 + ... + 141421.

It is an arithmetic number, because the mean of its divisors is an integer number (1181992608).

Almost surely, 2^8272505521 is an apocalyptic number.

It is an amenable number.

8272505521 is a deficient number, since it is larger than the sum of its proper divisors (1183435343).

8272505521 is a wasteful number, since it uses less digits than its factorization.

8272505521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206111.

The product of its (nonzero) digits is 56000, while the sum is 37.

The square root of 8272505521 is about 90953.3150632785. The cubic root of 8272505521 is about 2022.4557201083.

The spelling of 8272505521 in words is "eight billion, two hundred seventy-two million, five hundred five thousand, five hundred twenty-one".