8251065280 has 56 divisors (see below), whose sum is σ = 19664921808. Its totient is φ = 3297558528.

The previous prime is 8251065257. The next prime is 8251065289. The reversal of 8251065280 is 825601528.

It is a hoax number, since the sum of its digits (37) 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 (8251065289) 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, 378847 + ... + 400033.

It is an arithmetic number, because the mean of its divisors is an integer number (351159318).

Almost surely, 2^8251065280 is an apocalyptic number.

8251065280 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8251065280 is an abundant number, since it is smaller than the sum of its proper divisors (11413856528).

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

8251065280 is a wasteful number, since it uses less digits than its factorization.

8251065280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22421 (or 22411 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 37.

The square root of 8251065280 is about 90835.3746070329. The cubic root of 8251065280 is about 2020.7069773189.

The spelling of 8251065280 in words is "eight billion, two hundred fifty-one million, sixty-five thousand, two hundred eighty".