25127649871 has 2 divisors, whose sum is σ = 25127649872. Its totient is φ = 25127649870.

The previous prime is 25127649847. The next prime is 25127649887. The reversal of 25127649871 is 17894672152.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25127649871 - 2⁵ = 25127649839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25127649271) 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, 12563824935 + 12563824936.

It is an arithmetic number, because the mean of its divisors is an integer number (12563824936).

Almost surely, 2^25127649871 is an apocalyptic number.

25127649871 is a deficient number, since it is larger than the sum of its proper divisors (1).

25127649871 is an equidigital number, since it uses as much as digits as its factorization.

25127649871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1693440, while the sum is 52.

The spelling of 25127649871 in words is "twenty-five billion, one hundred twenty-seven million, six hundred forty-nine thousand, eight hundred seventy-one".