25403671 has 2 divisors, whose sum is σ = 25403672. Its totient is φ = 25403670.

The previous prime is 25403563. The next prime is 25403687. The reversal of 25403671 is 17630452.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25403671 - 2¹⁹ = 24879383 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25403771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12701835 + 12701836.

It is an arithmetic number, because the mean of its divisors is an integer number (12701836).

Almost surely, 2^25403671 is an apocalyptic number.

25403671 is a deficient number, since it is larger than the sum of its proper divisors (1).

25403671 is an equidigital number, since it uses as much as digits as its factorization.

25403671 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 25403671 is about 5040.2054521616. The cubic root of 25403671 is about 293.9671666482.

The spelling of 25403671 in words is "twenty-five million, four hundred three thousand, six hundred seventy-one".