825778316 has 24 divisors (see below), whose sum is σ = 1580113920. Its totient is φ = 374490000.

The previous prime is 825778313. The next prime is 825778333. The reversal of 825778316 is 613877528.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (825778313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2060 + ... + 40691.

It is an arithmetic number, because the mean of its divisors is an integer number (65838080).

Almost surely, 2^825778316 is an apocalyptic number.

It is an amenable number.

825778316 is a deficient number, since it is larger than the sum of its proper divisors (754335604).

825778316 is a wasteful number, since it uses less digits than its factorization.

825778316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43205 (or 43203 counting only the distinct ones).

The product of its digits is 564480, while the sum is 47.

The square root of 825778316 is about 28736.3587811678. The cubic root of 825778316 is about 938.1835738926.

The spelling of 825778316 in words is "eight hundred twenty-five million, seven hundred seventy-eight thousand, three hundred sixteen".