25688011 has 2 divisors, whose sum is σ = 25688012. Its totient is φ = 25688010.

The previous prime is 25688009. The next prime is 25688023. The reversal of 25688011 is 11088652.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25688011 - 2¹ = 25688009 is a prime.

It is a super-2 number, since 2×25688011² = 1319747818272242, which contains 22 as substring.

Together with 25688009, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (25688041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12844005 + 12844006.

It is an arithmetic number, because the mean of its divisors is an integer number (12844006).

Almost surely, 2^25688011 is an apocalyptic number.

25688011 is a deficient number, since it is larger than the sum of its proper divisors (1).

25688011 is an equidigital number, since it uses as much as digits as its factorization.

25688011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3840, while the sum is 31.

The square root of 25688011 is about 5068.3341444700. The cubic root of 25688011 is about 295.0598786811.

The spelling of 25688011 in words is "twenty-five million, six hundred eighty-eight thousand, eleven".