1025427731239 has 2 divisors, whose sum is σ = 1025427731240. Its totient is φ = 1025427731238.

The previous prime is 1025427731227. The next prime is 1025427731261. The reversal of 1025427731239 is 9321377245201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1025427731239 - 2⁹ = 1025427730727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1025427731299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 512713865619 + 512713865620.

It is an arithmetic number, because the mean of its divisors is an integer number (512713865620).

Almost surely, 2^{1025427731239} is an apocalyptic number.

1025427731239 is a deficient number, since it is larger than the sum of its proper divisors (1).

1025427731239 is an equidigital number, since it uses as much as digits as its factorization.

1025427731239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 635040, while the sum is 46.

The spelling of 1025427731239 in words is "one trillion, twenty-five billion, four hundred twenty-seven million, seven hundred thirty-one thousand, two hundred thirty-nine".