12025881779 has 2 divisors, whose sum is σ = 12025881780. Its totient is φ = 12025881778.

The previous prime is 12025881731. The next prime is 12025881797. The reversal of 12025881779 is 97718852021.

12025881779 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with next prime (12025881797) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12025881779 is a prime.

It is not a weakly prime, because it can be changed into another prime (12025881709) 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 as a sum of consecutive naturals, namely, 6012940889 + 6012940890.

It is an arithmetic number, because the mean of its divisors is an integer number (6012940890).

Almost surely, 2^12025881779 is an apocalyptic number.

12025881779 is a deficient number, since it is larger than the sum of its proper divisors (1).

12025881779 is an equidigital number, since it uses as much as digits as its factorization.

12025881779 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 564480, while the sum is 50.

The spelling of 12025881779 in words is "twelve billion, twenty-five million, eight hundred eighty-one thousand, seven hundred seventy-nine".