825118825278 has 64 divisors (see below), whose sum is σ = 1822298591232. Its totient is φ = 246976147680.

The previous prime is 825118825187. The next prime is 825118825309. The reversal of 825118825278 is 872528811528.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 37387275 + ... + 37409337.

It is an arithmetic number, because the mean of its divisors is an integer number (28473415488).

Almost surely, 2^825118825278 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 825118825278, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (911149295616).

825118825278 is an abundant number, since it is smaller than the sum of its proper divisors (997179765954).

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

825118825278 is a wasteful number, since it uses less digits than its factorization.

825118825278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28989.

The product of its digits is 5734400, while the sum is 57.

The spelling of 825118825278 in words is "eight hundred twenty-five billion, one hundred eighteen million, eight hundred twenty-five thousand, two hundred seventy-eight".