25651782127 has 2 divisors, whose sum is σ = 25651782128. Its totient is φ = 25651782126.

The previous prime is 25651782113. The next prime is 25651782151. The reversal of 25651782127 is 72128715652.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25651782127 - 2⁷ = 25651781999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25651782227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12825891063 + 12825891064.

It is an arithmetic number, because the mean of its divisors is an integer number (12825891064).

Almost surely, 2^25651782127 is an apocalyptic number.

25651782127 is a deficient number, since it is larger than the sum of its proper divisors (1).

25651782127 is an equidigital number, since it uses as much as digits as its factorization.

25651782127 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 470400, while the sum is 46.

The spelling of 25651782127 in words is "twenty-five billion, six hundred fifty-one million, seven hundred eighty-two thousand, one hundred twenty-seven".