8257992560 has 20 divisors (see below), whose sum is σ = 19199832888. Its totient is φ = 3303196992.

The previous prime is 8257992559. The next prime is 8257992569. The reversal of 8257992560 is 652997528.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×8257992560² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8257992569) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51612374 + ... + 51612533.

Almost surely, 2^8257992560 is an apocalyptic number.

8257992560 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8257992560 is an abundant number, since it is smaller than the sum of its proper divisors (10941840328).

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

8257992560 is a wasteful number, since it uses less digits than its factorization.

8257992560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103224920 (or 103224914 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 53.

The square root of 8257992560 is about 90873.4975666723. The cubic root of 8257992560 is about 2021.2723219940.

The spelling of 8257992560 in words is "eight billion, two hundred fifty-seven million, nine hundred ninety-two thousand, five hundred sixty".