8251557264 has 80 divisors (see below), whose sum is σ = 23696122240. Its totient is φ = 2749230720.

The previous prime is 8251557203. The next prime is 8251557289. The reversal of 8251557264 is 4627551528.

8251557264 is a `hidden beast` number, since 8 + 2 + 5 + 15 + 572 + 64 = 666.

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, 1516629 + ... + 1522059.

It is an arithmetic number, because the mean of its divisors is an integer number (296201528).

Almost surely, 2^8251557264 is an apocalyptic number.

It is an amenable number.

8251557264 is an abundant number, since it is smaller than the sum of its proper divisors (15444564976).

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

8251557264 is a wasteful number, since it uses less digits than its factorization.

8251557264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8965 (or 8953 counting only the distinct ones).

The product of its digits is 672000, while the sum is 45.

The square root of 8251557264 is about 90838.0826746140. The cubic root of 8251557264 is about 2020.7471392337.

The spelling of 8251557264 in words is "eight billion, two hundred fifty-one million, five hundred fifty-seven thousand, two hundred sixty-four".