25655887 has 2 divisors, whose sum is σ = 25655888. Its totient is φ = 25655886.

The previous prime is 25655849. The next prime is 25655893. The reversal of 25655887 is 78855652.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25655887 - 2⁷ = 25655759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25656887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12827943 + 12827944.

It is an arithmetic number, because the mean of its divisors is an integer number (12827944).

Almost surely, 2^25655887 is an apocalyptic number.

25655887 is a deficient number, since it is larger than the sum of its proper divisors (1).

25655887 is an equidigital number, since it uses as much as digits as its factorization.

25655887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 672000, while the sum is 46.

The square root of 25655887 is about 5065.1640644702. The cubic root of 25655887 is about 294.9368322090.

The spelling of 25655887 in words is "twenty-five million, six hundred fifty-five thousand, eight hundred eighty-seven".