12181875 has 40 divisors (see below), whose sum is σ = 20805840. Its totient is φ = 6336000.

The previous prime is 12181867. The next prime is 12181909. The reversal of 12181875 is 57818121.

It is not a de Polignac number, because 12181875 - 2³ = 12181867 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 136831 + ... + 136919.

It is an arithmetic number, because the mean of its divisors is an integer number (520146).

Almost surely, 2^12181875 is an apocalyptic number.

12181875 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12181875 is a deficient number, since it is larger than the sum of its proper divisors (8623965).

12181875 is an frugal number, since it uses more digits than its factorization.

12181875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185 (or 170 counting only the distinct ones).

The product of its digits is 4480, while the sum is 33.

The square root of 12181875 is about 3490.2542887303. The cubic root of 12181875 is about 230.0936921374.

Adding to 12181875 its reverse (57818121), we get a palindrome (69999996).

The spelling of 12181875 in words is "twelve million, one hundred eighty-one thousand, eight hundred seventy-five".