8165622425 has 12 divisors (see below), whose sum is σ = 10451997696. Its totient is φ = 6321771600.

The previous prime is 8165622407. The next prime is 8165622431. The reversal of 8165622425 is 5242265618.

It is not a de Polignac number, because 8165622425 - 2⁸ = 8165622169 is a prime.

It is a super-3 number, since 3×8165622425³ (a number of 31 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5267369 + ... + 5268918.

It is an arithmetic number, because the mean of its divisors is an integer number (870999808).

Almost surely, 2^8165622425 is an apocalyptic number.

It is an amenable number.

8165622425 is a deficient number, since it is larger than the sum of its proper divisors (2286375271).

8165622425 is a wasteful number, since it uses less digits than its factorization.

8165622425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10536328 (or 10536323 counting only the distinct ones).

The product of its digits is 230400, while the sum is 41.

The square root of 8165622425 is about 90363.8336116834. The cubic root of 8165622425 is about 2013.7077035407.

The spelling of 8165622425 in words is "eight billion, one hundred sixty-five million, six hundred twenty-two thousand, four hundred twenty-five".