12256445 has 4 divisors (see below), whose sum is σ = 14707740. Its totient is φ = 9805152.

The previous prime is 12256427. The next prime is 12256469. The reversal of 12256445 is 54465221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54465221 = 37 ⋅1472033.

It can be written as a sum of positive squares in 2 ways, for example, as 8922169 + 3334276 = 2987^2 + 1826^2 .

It is a cyclic number.

It is not a de Polignac number, because 12256445 - 2¹² = 12252349 is a prime.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1225640 + ... + 1225649.

It is an arithmetic number, because the mean of its divisors is an integer number (3676935).

Almost surely, 2^12256445 is an apocalyptic number.

It is an amenable number.

12256445 is a deficient number, since it is larger than the sum of its proper divisors (2451295).

12256445 is an equidigital number, since it uses as much as digits as its factorization.

12256445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2451294.

The product of its digits is 9600, while the sum is 29.

The square root of 12256445 is about 3500.9205932154. The cubic root of 12256445 is about 230.5622350823.

The spelling of 12256445 in words is "twelve million, two hundred fifty-six thousand, four hundred forty-five".