8125863174225 has 36 divisors (see below), whose sum is σ = 15410460521196. Its totient is φ = 4078864650240.

The previous prime is 8125863174181. The next prime is 8125863174251. The reversal of 8125863174225 is 5224713685218.

It is a happy number.

8125863174225 is a `hidden beast` number, since 8 + 1 + 2 + 586 + 3 + 17 + 42 + 2 + 5 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 271767243969 + 7854095930256 = 521313^2 + 2802516^2 .

It is not a de Polignac number, because 8125863174225 - 2⁶ = 8125863174161 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 35 ways as a sum of consecutive naturals, for example, 1062200512 + ... + 1062208161.

It is an arithmetic number, because the mean of its divisors is an integer number (428068347811).

Almost surely, 2^{8125863174225} is an apocalyptic number.

8125863174225 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

8125863174225 is a deficient number, since it is larger than the sum of its proper divisors (7284597346971).

8125863174225 is a wasteful number, since it uses less digits than its factorization.

8125863174225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2124408706 (or 2124408698 counting only the distinct ones).

The product of its digits is 6451200, while the sum is 54.

The spelling of 8125863174225 in words is "eight trillion, one hundred twenty-five billion, eight hundred sixty-three million, one hundred seventy-four thousand, two hundred twenty-five".