8611511225 has 12 divisors (see below), whose sum is σ = 10762358784. Its totient is φ = 6834960720.

The previous prime is 8611511171. The next prime is 8611511243. The reversal of 8611511225 is 5221151168.

It is not a de Polignac number, because 8611511225 - 2⁸ = 8611510969 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8611511191 and 8611511200.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1352969 + ... + 1359318.

It is an arithmetic number, because the mean of its divisors is an integer number (896863232).

Almost surely, 2^8611511225 is an apocalyptic number.

It is an amenable number.

8611511225 is a deficient number, since it is larger than the sum of its proper divisors (2150847559).

8611511225 is a wasteful number, since it uses less digits than its factorization.

8611511225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2712424 (or 2712419 counting only the distinct ones).

The product of its digits is 4800, while the sum is 32.

The square root of 8611511225 is about 92798.2285660669. The cubic root of 8611511225 is about 2049.7133229898.

The spelling of 8611511225 in words is "eight billion, six hundred eleven million, five hundred eleven thousand, two hundred twenty-five".