8619775225 has 6 divisors (see below), whose sum is σ = 10688521310. Its totient is φ = 6895820160.

The previous prime is 8619775207. The next prime is 8619775237. The reversal of 8619775225 is 5225779168.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 169937296 + 8449837929 = 13036^2 + 91923^2 .

It is not a de Polignac number, because 8619775225 - 2⁵ = 8619775193 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 172395480 + ... + 172395529.

Almost surely, 2^8619775225 is an apocalyptic number.

It is an amenable number.

8619775225 is a deficient number, since it is larger than the sum of its proper divisors (2068746085).

8619775225 is a wasteful number, since it uses less digits than its factorization.

8619775225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344791019 (or 344791014 counting only the distinct ones).

The product of its digits is 2116800, while the sum is 52.

The square root of 8619775225 is about 92842.7446007495. The cubic root of 8619775225 is about 2050.3687795804.

The spelling of 8619775225 in words is "eight billion, six hundred nineteen million, seven hundred seventy-five thousand, two hundred twenty-five".