825786408 has 16 divisors (see below), whose sum is σ = 2064466080. Its totient is φ = 275262128.

The previous prime is 825786389. The next prime is 825786421. The reversal of 825786408 is 804687528.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17203860 + ... + 17203907.

It is an arithmetic number, because the mean of its divisors is an integer number (129029130).

Almost surely, 2^825786408 is an apocalyptic number.

It is an amenable number.

825786408 is an abundant number, since it is smaller than the sum of its proper divisors (1238679672).

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

825786408 is a wasteful number, since it uses less digits than its factorization.

825786408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34407776 (or 34407772 counting only the distinct ones).

The product of its (nonzero) digits is 860160, while the sum is 48.

The square root of 825786408 is about 28736.4995780627. The cubic root of 825786408 is about 938.1866383779.

The spelling of 825786408 in words is "eight hundred twenty-five million, seven hundred eighty-six thousand, four hundred eight".