825331878 has 96 divisors (see below), whose sum is σ = 2171797056. Its totient is φ = 221128704.

The previous prime is 825331867. The next prime is 825331993. The reversal of 825331878 is 878133528.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 798450 + ... + 799482.

It is an arithmetic number, because the mean of its divisors is an integer number (22622886).

Almost surely, 2^825331878 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 825331878, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1085898528).

825331878 is an abundant number, since it is smaller than the sum of its proper divisors (1346465178).

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

825331878 is a wasteful number, since it uses less digits than its factorization.

825331878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1438 (or 1435 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 825331878 is about 28728.5899062241. The cubic root of 825331878 is about 938.0144743123.

The spelling of 825331878 in words is "eight hundred twenty-five million, three hundred thirty-one thousand, eight hundred seventy-eight".