12125645 has 8 divisors (see below), whose sum is σ = 16629504. Its totient is φ = 8314704.

The previous prime is 12125609. The next prime is 12125647. The reversal of 12125645 is 54652121.

12125645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 12125645 - 2²⁰ = 11077069 is a prime.

It is a super-3 number, since 3×12125645³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12125647) 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, 173189 + ... + 173258.

It is an arithmetic number, because the mean of its divisors is an integer number (2078688).

Almost surely, 2^12125645 is an apocalyptic number.

It is an amenable number.

12125645 is a deficient number, since it is larger than the sum of its proper divisors (4503859).

12125645 is an equidigital number, since it uses as much as digits as its factorization.

12125645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346459.

The product of its digits is 2400, while the sum is 26.

The square root of 12125645 is about 3482.1896846668. The cubic root of 12125645 is about 229.7391181905.

Adding to 12125645 its reverse (54652121), we get a palindrome (66777766).

The spelling of 12125645 in words is "twelve million, one hundred twenty-five thousand, six hundred forty-five".