8636445625 has 10 divisors (see below), whose sum is σ = 10792103234. Its totient is φ = 6909156000.

The previous prime is 8636445619. The next prime is 8636445637. The reversal of 8636445625 is 5265446368.

It can be written as a sum of positive squares in 5 ways, for example, as 2314764544 + 6321681081 = 48112^2 + 79509^2 .

It is not a de Polignac number, because 8636445625 - 2²⁷ = 8502227897 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 6908532 + ... + 6909781.

Almost surely, 2^8636445625 is an apocalyptic number.

It is an amenable number.

8636445625 is a deficient number, since it is larger than the sum of its proper divisors (2155657609).

8636445625 is an equidigital number, since it uses as much as digits as its factorization.

8636445625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13818333 (or 13818318 counting only the distinct ones).

The product of its digits is 4147200, while the sum is 49.

The square root of 8636445625 is about 92932.4788488933. The cubic root of 8636445625 is about 2051.6897133546.

The spelling of 8636445625 in words is "eight billion, six hundred thirty-six million, four hundred forty-five thousand, six hundred twenty-five".