8556250001 has 4 divisors (see below), whose sum is σ = 9214423092. Its totient is φ = 7898076912.

The previous prime is 8556249997. The next prime is 8556250009. The reversal of 8556250001 is 1000526558.

8556250001 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 92500²+1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1000526558 = 2 ⋅500263279.

It can be written as a sum of positive squares in 2 ways, for example, as 1265651776 + 7290598225 = 35576^2 + 85385^2 .

It is a cyclic number.

It is not a de Polignac number, because 8556250001 - 2² = 8556249997 is a prime.

It is a super-2 number, since 2×8556250001² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8556250001.

It is not an unprimeable number, because it can be changed into a prime (8556250009) 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, 329086526 + ... + 329086551.

It is an arithmetic number, because the mean of its divisors is an integer number (2303605773).

Almost surely, 2^8556250001 is an apocalyptic number.

It is an amenable number.

8556250001 is a deficient number, since it is larger than the sum of its proper divisors (658173091).

8556250001 is a wasteful number, since it uses less digits than its factorization.

8556250001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658173090.

The product of its (nonzero) digits is 12000, while the sum is 32.

The square root of 8556250001 is about 92500.0000054054. Note that the first 5 decimals coincide. The cubic root of 8556250001 is about 2045.3194823699.

Adding to 8556250001 its reverse (1000526558), we get a palindrome (9556776559).

The spelling of 8556250001 in words is "eight billion, five hundred fifty-six million, two hundred fifty thousand, one".