25681927 has 2 divisors, whose sum is σ = 25681928. Its totient is φ = 25681926.

The previous prime is 25681921. The next prime is 25681969. The reversal of 25681927 is 72918652.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25681927 - 2¹¹ = 25679879 is a prime.

It is a super-2 number, since 2×25681927² = 1319122748866658, which contains 22 as substring.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 25681927.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25681921) 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, 12840963 + 12840964.

It is an arithmetic number, because the mean of its divisors is an integer number (12840964).

Almost surely, 2^25681927 is an apocalyptic number.

25681927 is a deficient number, since it is larger than the sum of its proper divisors (1).

25681927 is an equidigital number, since it uses as much as digits as its factorization.

25681927 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 40.

The square root of 25681927 is about 5067.7339117203. The cubic root of 25681927 is about 295.0365826508.

The spelling of 25681927 in words is "twenty-five million, six hundred eighty-one thousand, nine hundred twenty-seven".