825198870 has 64 divisors (see below), whose sum is σ = 2136611520. Its totient is φ = 203194368.

The previous prime is 825198859. The next prime is 825198877. The reversal of 825198870 is 78891528.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (825198877) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11766 + ... + 42294.

It is an arithmetic number, because the mean of its divisors is an integer number (33384555).

Almost surely, 2^825198870 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 825198870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1068305760).

825198870 is an abundant number, since it is smaller than the sum of its proper divisors (1311412650).

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

825198870 is a wasteful number, since it uses less digits than its factorization.

825198870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30609.

The product of its (nonzero) digits is 322560, while the sum is 48.

The square root of 825198870 is about 28726.2749064337. The cubic root of 825198870 is about 937.9640824092.

The spelling of 825198870 in words is "eight hundred twenty-five million, one hundred ninety-eight thousand, eight hundred seventy".