12256745 has 16 divisors (see below), whose sum is σ = 15957648. Its totient is φ = 9000960.

The previous prime is 12256733. The next prime is 12256747. The reversal of 12256745 is 54765221.

12256745 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 90601 + 12166144 = 301^2 + 3488^2 .

It is not a de Polignac number, because 12256745 - 2⁶ = 12256681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12256747) 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 15 ways as a sum of consecutive naturals, for example, 1727 + ... + 5243.

It is an arithmetic number, because the mean of its divisors is an integer number (997353).

Almost surely, 2^12256745 is an apocalyptic number.

It is an amenable number.

12256745 is a deficient number, since it is larger than the sum of its proper divisors (3700903).

12256745 is a wasteful number, since it uses less digits than its factorization.

12256745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3580.

The product of its digits is 16800, while the sum is 32.

The square root of 12256745 is about 3500.9634388265. The cubic root of 12256745 is about 230.5641162179.

The spelling of 12256745 in words is "twelve million, two hundred fifty-six thousand, seven hundred forty-five".