12256015 has 4 divisors (see below), whose sum is σ = 14707224. Its totient is φ = 9804808.

The previous prime is 12256001. The next prime is 12256019. The reversal of 12256015 is 51065221.

12256015 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12256015 - 2⁵ = 12255983 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12256019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1225597 + ... + 1225606.

It is an arithmetic number, because the mean of its divisors is an integer number (3676806).

Almost surely, 2^12256015 is an apocalyptic number.

12256015 is a deficient number, since it is larger than the sum of its proper divisors (2451209).

12256015 is an equidigital number, since it uses as much as digits as its factorization.

12256015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2451208.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 12256015 is about 3500.8591802585. The cubic root of 12256015 is about 230.5595387343.

The spelling of 12256015 in words is "twelve million, two hundred fifty-six thousand, fifteen".