25742870011787 has 2 divisors, whose sum is σ = 25742870011788. Its totient is φ = 25742870011786.

The previous prime is 25742870011711. The next prime is 25742870011819. The reversal of 25742870011787 is 78711007824752.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25742870011787 is a prime.

It is not a weakly prime, because it can be changed into another prime (25742870011087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12871435005893 + 12871435005894.

It is an arithmetic number, because the mean of its divisors is an integer number (12871435005894).

Almost surely, 2^{25742870011787} is an apocalyptic number.

25742870011787 is a deficient number, since it is larger than the sum of its proper divisors (1).

25742870011787 is an equidigital number, since it uses as much as digits as its factorization.

25742870011787 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12293120, while the sum is 59.

The spelling of 25742870011787 in words is "twenty-five trillion, seven hundred forty-two billion, eight hundred seventy million, eleven thousand, seven hundred eighty-seven".