825247161 has 12 divisors (see below), whose sum is σ = 1192468992. Its totient is φ = 549959256.

The previous prime is 825247151. The next prime is 825247217. The reversal of 825247161 is 161742528.

825247161 is a `hidden beast` number, since 8 + 2 + 524 + 71 + 61 = 666.

It is not a de Polignac number, because 825247161 - 2⁶ = 825247097 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (825247141) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 10680 + ... + 42006.

It is an arithmetic number, because the mean of its divisors is an integer number (99372416).

Almost surely, 2^825247161 is an apocalyptic number.

It is an amenable number.

825247161 is a deficient number, since it is larger than the sum of its proper divisors (367221831).

825247161 is a wasteful number, since it uses less digits than its factorization.

825247161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34260 (or 34257 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 825247161 is about 28727.1154312437. The cubic root of 825247161 is about 937.9823787422.

Adding to 825247161 its reverse (161742528), we get a palindrome (986989689).

The spelling of 825247161 in words is "eight hundred twenty-five million, two hundred forty-seven thousand, one hundred sixty-one".