25385671 has 2 divisors, whose sum is σ = 25385672. Its totient is φ = 25385670.

The previous prime is 25385669. The next prime is 25385681. The reversal of 25385671 is 17658352.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25385671 - 2¹ = 25385669 is a prime.

Together with 25385669, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25385671.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25385681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12692835 + 12692836.

It is an arithmetic number, because the mean of its divisors is an integer number (12692836).

Almost surely, 2^25385671 is an apocalyptic number.

25385671 is a deficient number, since it is larger than the sum of its proper divisors (1).

25385671 is an equidigital number, since it uses as much as digits as its factorization.

25385671 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 50400, while the sum is 37.

The square root of 25385671 is about 5038.4194942462. The cubic root of 25385671 is about 293.8977192148.

The spelling of 25385671 in words is "twenty-five million, three hundred eighty-five thousand, six hundred seventy-one".