825577988 has 12 divisors (see below), whose sum is σ = 1491366912. Its totient is φ = 399473160.

The previous prime is 825577943. The next prime is 825577993. The reversal of 825577988 is 889775528.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 3328820 + ... + 3329067.

It is an arithmetic number, because the mean of its divisors is an integer number (124280576).

Almost surely, 2^825577988 is an apocalyptic number.

It is an amenable number.

825577988 is a deficient number, since it is larger than the sum of its proper divisors (665788924).

825577988 is a wasteful number, since it uses less digits than its factorization.

825577988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6657922 (or 6657920 counting only the distinct ones).

The product of its digits is 11289600, while the sum is 59.

The square root of 825577988 is about 28732.8729506814. The cubic root of 825577988 is about 938.1077021824.

The spelling of 825577988 in words is "eight hundred twenty-five million, five hundred seventy-seven thousand, nine hundred eighty-eight".