12105425 has 12 divisors (see below), whose sum is σ = 15058560. Its totient is φ = 9653520.

The previous prime is 12105421. The next prime is 12105427. The reversal of 12105425 is 52450121.

It is not a de Polignac number, because 12105425 - 2² = 12105421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12105397 and 12105406.

It is not an unprimeable number, because it can be changed into a prime (12105421) 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, 10424 + ... + 11526.

It is an arithmetic number, because the mean of its divisors is an integer number (1254880).

Almost surely, 2^12105425 is an apocalyptic number.

It is an amenable number.

12105425 is a deficient number, since it is larger than the sum of its proper divisors (2953135).

12105425 is a wasteful number, since it uses less digits than its factorization.

12105425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1552 (or 1547 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 12105425 is about 3479.2851277238. The cubic root of 12105425 is about 229.6113474079.

Adding to 12105425 its reverse (52450121), we get a palindrome (64555546).

The spelling of 12105425 in words is "twelve million, one hundred five thousand, four hundred twenty-five".