25071787427 has 2 divisors, whose sum is σ = 25071787428. Its totient is φ = 25071787426.

The previous prime is 25071787417. The next prime is 25071787441. The reversal of 25071787427 is 72478717052.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25071787427 - 2¹⁰ = 25071786403 is a prime.

It is not a weakly prime, because it can be changed into another prime (25071787417) 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, 12535893713 + 12535893714.

It is an arithmetic number, because the mean of its divisors is an integer number (12535893714).

Almost surely, 2^25071787427 is an apocalyptic number.

25071787427 is a deficient number, since it is larger than the sum of its proper divisors (1).

25071787427 is an equidigital number, since it uses as much as digits as its factorization.

25071787427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536640, while the sum is 50.

The spelling of 25071787427 in words is "twenty-five billion, seventy-one million, seven hundred eighty-seven thousand, four hundred twenty-seven".