25853887 has 2 divisors, whose sum is σ = 25853888. Its totient is φ = 25853886.

The previous prime is 25853857. The next prime is 25853897. The reversal of 25853887 is 78835852.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25853887 - 2¹⁹ = 25329599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25853837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12926943 + 12926944.

It is an arithmetic number, because the mean of its divisors is an integer number (12926944).

Almost surely, 2^25853887 is an apocalyptic number.

25853887 is a deficient number, since it is larger than the sum of its proper divisors (1).

25853887 is an equidigital number, since it uses as much as digits as its factorization.

25853887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 537600, while the sum is 46.

The square root of 25853887 is about 5084.6717691509. The cubic root of 25853887 is about 295.6936163538.

It can be divided in two parts, 258 and 53887, that added together give a palindrome (54145).

The spelling of 25853887 in words is "twenty-five million, eight hundred fifty-three thousand, eight hundred eighty-seven".