8173425648 has 80 divisors (see below), whose sum is σ = 22371068160. Its totient is φ = 2562567168.

The previous prime is 8173425647. The next prime is 8173425691. The reversal of 8173425648 is 8465243718.

It is a Cunningham number, because it is equal to 90407²-1.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 8173425597 and 8173425606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8173425647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2167861 + ... + 2171627.

It is an arithmetic number, because the mean of its divisors is an integer number (279638352).

Almost surely, 2^8173425648 is an apocalyptic number.

It is an amenable number.

8173425648 is an abundant number, since it is smaller than the sum of its proper divisors (14197642512).

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

8173425648 is a wasteful number, since it uses less digits than its factorization.

8173425648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6454 (or 6448 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 48.

The square root of 8173425648 is about 90406.9999944695. Note that the first 5 decimals coincide. The cubic root of 8173425648 is about 2014.3489450270.

The spelling of 8173425648 in words is "eight billion, one hundred seventy-three million, four hundred twenty-five thousand, six hundred forty-eight".