12555455251 has 4 divisors (see below), whose sum is σ = 12684893032. Its totient is φ = 12426017472.

The previous prime is 12555455249. The next prime is 12555455261. The reversal of 12555455251 is 15255455521.

It is a happy number.

12555455251 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, and also an emirpimes, since its reverse is a distinct semiprime: 15255455521 = 41 ⋅372084281.

It is a cyclic number.

It is not a de Polignac number, because 12555455251 - 2¹ = 12555455249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12555455261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64718745 + ... + 64718938.

It is an arithmetic number, because the mean of its divisors is an integer number (3171223258).

Almost surely, 2^12555455251 is an apocalyptic number.

12555455251 is a deficient number, since it is larger than the sum of its proper divisors (129437781).

12555455251 is an equidigital number, since it uses as much as digits as its factorization.

12555455251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129437780.

The product of its digits is 250000, while the sum is 40.

The spelling of 12555455251 in words is "twelve billion, five hundred fifty-five million, four hundred fifty-five thousand, two hundred fifty-one".