25890012571 has 2 divisors, whose sum is σ = 25890012572. Its totient is φ = 25890012570.

The previous prime is 25890012569. The next prime is 25890012581. The reversal of 25890012571 is 17521009852.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25890012571 - 2¹ = 25890012569 is a prime.

Together with 25890012569, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (25890012581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12945006285 + 12945006286.

It is an arithmetic number, because the mean of its divisors is an integer number (12945006286).

Almost surely, 2^25890012571 is an apocalyptic number.

25890012571 is a deficient number, since it is larger than the sum of its proper divisors (1).

25890012571 is an equidigital number, since it uses as much as digits as its factorization.

25890012571 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50400, while the sum is 40.

The spelling of 25890012571 in words is "twenty-five billion, eight hundred ninety million, twelve thousand, five hundred seventy-one".