8113778225 has 24 divisors (see below), whose sum is σ = 11501847168. Its totient is φ = 5562057600.

The previous prime is 8113778203. The next prime is 8113778249. The reversal of 8113778225 is 5228773118.

It is not a de Polignac number, because 8113778225 - 2⁶ = 8113778161 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 946157 + ... + 954693.

It is an arithmetic number, because the mean of its divisors is an integer number (479243632).

Almost surely, 2^8113778225 is an apocalyptic number.

It is an amenable number.

8113778225 is a deficient number, since it is larger than the sum of its proper divisors (3388068943).

8113778225 is a wasteful number, since it uses less digits than its factorization.

8113778225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13985 (or 13980 counting only the distinct ones).

The product of its digits is 188160, while the sum is 44.

The square root of 8113778225 is about 90076.5131707483. The cubic root of 8113778225 is about 2009.4369209771.

The spelling of 8113778225 in words is "eight billion, one hundred thirteen million, seven hundred seventy-eight thousand, two hundred twenty-five".