12125445 has 8 divisors (see below), whose sum is σ = 19400736. Its totient is φ = 6466896.

The previous prime is 12125423. The next prime is 12125447. The reversal of 12125445 is 54452121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12125445 - 2⁵ = 12125413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12125447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 404167 + ... + 404196.

It is an arithmetic number, because the mean of its divisors is an integer number (2425092).

Almost surely, 2^12125445 is an apocalyptic number.

12125445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12125445 is a deficient number, since it is larger than the sum of its proper divisors (7275291).

12125445 is an equidigital number, since it uses as much as digits as its factorization.

12125445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808371.

The product of its digits is 1600, while the sum is 24.

The square root of 12125445 is about 3482.1609669859. The cubic root of 12125445 is about 229.7378550803.

Adding to 12125445 its reverse (54452121), we get a palindrome (66577566).

The spelling of 12125445 in words is "twelve million, one hundred twenty-five thousand, four hundred forty-five".