8263625778 has 32 divisors (see below), whose sum is σ = 19443827520. Its totient is φ = 2592509760.

The previous prime is 8263625759. The next prime is 8263625827. The reversal of 8263625778 is 8775263628.

8263625778 is a `hidden beast` number, since 8 + 2 + 6 + 3 + 62 + 577 + 8 = 666.

It is a super-2 number, since 2×8263625778² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

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 15 ways as a sum of consecutive naturals, for example, 4499968 + ... + 4501803.

It is an arithmetic number, because the mean of its divisors is an integer number (607619610).

Almost surely, 2^8263625778 is an apocalyptic number.

8263625778 is an abundant number, since it is smaller than the sum of its proper divisors (11180201742).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8263625778 is a wasteful number, since it uses less digits than its factorization.

8263625778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9001799 (or 9001793 counting only the distinct ones).

The product of its digits is 6773760, while the sum is 54.

The square root of 8263625778 is about 90904.4871169735. The cubic root of 8263625778 is about 2021.7318234795.

The spelling of 8263625778 in words is "eight billion, two hundred sixty-three million, six hundred twenty-five thousand, seven hundred seventy-eight".