12161125 has 16 divisors (see below), whose sum is σ = 15275520. Its totient is φ = 9666000.

The previous prime is 12161119. The next prime is 12161141. The reversal of 12161125 is 52116121.

It is not a de Polignac number, because 12161125 - 2³ = 12161117 is a prime.

It is a super-2 number, since 2×12161125² = 295785922531250, which contains 22 as substring.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 33696 + ... + 34054.

It is an arithmetic number, because the mean of its divisors is an integer number (954720).

Almost surely, 2^12161125 is an apocalyptic number.

It is an amenable number.

12161125 is a deficient number, since it is larger than the sum of its proper divisors (3114395).

12161125 is an equidigital number, since it uses as much as digits as its factorization.

12161125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645 (or 635 counting only the distinct ones).

The product of its digits is 120, while the sum is 19.

The square root of 12161125 is about 3487.2804590397. The cubic root of 12161125 is about 229.9629745062.

Adding to 12161125 its reverse (52116121), we get a palindrome (64277246).

The spelling of 12161125 in words is "twelve million, one hundred sixty-one thousand, one hundred twenty-five".