25536887 has 2 divisors, whose sum is σ = 25536888. Its totient is φ = 25536886.

The previous prime is 25536881. The next prime is 25536947. The reversal of 25536887 is 78863552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25536887 - 2⁸ = 25536631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25536881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12768443 + 12768444.

It is an arithmetic number, because the mean of its divisors is an integer number (12768444).

Almost surely, 2^25536887 is an apocalyptic number.

25536887 is a deficient number, since it is larger than the sum of its proper divisors (1).

25536887 is an equidigital number, since it uses as much as digits as its factorization.

25536887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 403200, while the sum is 44.

The square root of 25536887 is about 5053.4035065488. The cubic root of 25536887 is about 294.4801223753.

The spelling of 25536887 in words is "twenty-five million, five hundred thirty-six thousand, eight hundred eighty-seven".