25127663791 has 2 divisors, whose sum is σ = 25127663792. Its totient is φ = 25127663790.

The previous prime is 25127663741. The next prime is 25127663797. The reversal of 25127663791 is 19736672152.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25127663791 - 2²¹ = 25125566639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25127663797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12563831895 + 12563831896.

It is an arithmetic number, because the mean of its divisors is an integer number (12563831896).

Almost surely, 2^25127663791 is an apocalyptic number.

25127663791 is a deficient number, since it is larger than the sum of its proper divisors (1).

25127663791 is an equidigital number, since it uses as much as digits as its factorization.

25127663791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 952560, while the sum is 49.

The spelling of 25127663791 in words is "twenty-five billion, one hundred twenty-seven million, six hundred sixty-three thousand, seven hundred ninety-one".