8509125266 has 4 divisors (see below), whose sum is σ = 12763687902. Its totient is φ = 4254562632.

The previous prime is 8509125263. The next prime is 8509125271. The reversal of 8509125266 is 6625219058.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 7841988025 + 667137241 = 88555^2 + 25829^2 .

It is not an unprimeable number, because it can be changed into a prime (8509125263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2127281315 + ... + 2127281318.

Almost surely, 2^8509125266 is an apocalyptic number.

8509125266 is a deficient number, since it is larger than the sum of its proper divisors (4254562636).

8509125266 is a wasteful number, since it uses less digits than its factorization.

8509125266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4254562635.

The product of its (nonzero) digits is 259200, while the sum is 44.

The square root of 8509125266 is about 92244.9200010494. The cubic root of 8509125266 is about 2041.5576071898.

The spelling of 8509125266 in words is "eight billion, five hundred nine million, one hundred twenty-five thousand, two hundred sixty-six".