12256720235265 has 32 divisors (see below), whose sum is σ = 21393865276416. Its totient is φ = 5942564116160.

The previous prime is 12256720235261. The next prime is 12256720235273. The reversal of 12256720235265 is 56253202765221.

It is a happy number.

12256720235265 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12256720235265 - 2² = 12256720235261 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12256720235261) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11392894 + ... + 12422216.

It is an arithmetic number, because the mean of its divisors is an integer number (668558289888).

Almost surely, 2^{12256720235265} is an apocalyptic number.

12256720235265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12256720235265 is a deficient number, since it is larger than the sum of its proper divisors (9137145041151).

12256720235265 is a wasteful number, since it uses less digits than its factorization.

12256720235265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1101509.

The product of its (nonzero) digits is 3024000, while the sum is 48.

The spelling of 12256720235265 in words is "twelve trillion, two hundred fifty-six billion, seven hundred twenty million, two hundred thirty-five thousand, two hundred sixty-five".