825641672 has 16 divisors (see below), whose sum is σ = 1615386240. Its totient is φ = 394872016.

The previous prime is 825641651. The next prime is 825641681. The reversal of 825641672 is 276146528.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2243408 + ... + 2243775.

It is an arithmetic number, because the mean of its divisors is an integer number (100961640).

Almost surely, 2^825641672 is an apocalyptic number.

It is an amenable number.

825641672 is a deficient number, since it is larger than the sum of its proper divisors (789744568).

825641672 is a wasteful number, since it uses less digits than its factorization.

825641672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4487212 (or 4487208 counting only the distinct ones).

The product of its digits is 161280, while the sum is 41.

The square root of 825641672 is about 28733.9811373224. The cubic root of 825641672 is about 938.1318230269.

The spelling of 825641672 in words is "eight hundred twenty-five million, six hundred forty-one thousand, six hundred seventy-two".