825221108 has 24 divisors (see below), whose sum is σ = 1459497984. Its totient is φ = 408240000.

The previous prime is 825221093. The next prime is 825221113. The reversal of 825221108 is 801122528.

It is a happy number.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 201683 + ... + 205733.

It is an arithmetic number, because the mean of its divisors is an integer number (60812416).

Almost surely, 2^825221108 is an apocalyptic number.

It is an amenable number.

825221108 is a deficient number, since it is larger than the sum of its proper divisors (634276876).

825221108 is a wasteful number, since it uses less digits than its factorization.

825221108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4583 (or 4581 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 29.

The square root of 825221108 is about 28726.6619710679. The cubic root of 825221108 is about 937.9725079572.

The spelling of 825221108 in words is "eight hundred twenty-five million, two hundred twenty-one thousand, one hundred eight".