825606255880 has 128 divisors (see below), whose sum is σ = 2144048544000. Its totient is φ = 280260725760.

The previous prime is 825606255869. The next prime is 825606255883. The reversal of 825606255880 is 88552606528.

It is not an unprimeable number, because it can be changed into a prime (825606255883) by changing a digit.

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, 44519410 + ... + 44537950.

It is an arithmetic number, because the mean of its divisors is an integer number (16750379250).

Almost surely, 2^825606255880 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 825606255880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1072024272000).

825606255880 is an abundant number, since it is smaller than the sum of its proper divisors (1318442288120).

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

825606255880 is a wasteful number, since it uses less digits than its factorization.

825606255880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20127 (or 20123 counting only the distinct ones).

The product of its (nonzero) digits is 9216000, while the sum is 55.

The spelling of 825606255880 in words is "eight hundred twenty-five billion, six hundred six million, two hundred fifty-five thousand, eight hundred eighty".