25906871 has 2 divisors, whose sum is σ = 25906872. Its totient is φ = 25906870.

The previous prime is 25906843. The next prime is 25906913. The reversal of 25906871 is 17860952.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25906871 - 2²² = 21712567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25906171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12953435 + 12953436.

It is an arithmetic number, because the mean of its divisors is an integer number (12953436).

Almost surely, 2^25906871 is an apocalyptic number.

25906871 is a deficient number, since it is larger than the sum of its proper divisors (1).

25906871 is an equidigital number, since it uses as much as digits as its factorization.

25906871 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 25906871 is about 5089.8792716527. The cubic root of 25906871 is about 295.8954730451.

The spelling of 25906871 in words is "twenty-five million, nine hundred six thousand, eight hundred seventy-one".