Search a number
25111 is a prime number

25111 has 2 divisors, whose sum is σ = 25112. Its totient is φ = 25110.

The previous prime is 25097. The next prime is 25117. The reversal of 25111 is 11152.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25111 - 211 = 23063 is a prime.

25111 is a modest number, since divided by 111 gives 25 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12555 + 12556.

It is an arithmetic number, because the mean of its divisors is an integer number (12556).

225111 is an apocalyptic number.

25111 is a deficient number, since it is larger than the sum of its proper divisors (1).

25111 is an equidigital number, since it uses as much as digits as its factorization.

25111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10, while the sum is 10.

The square root of 25111 is about 158.4645070670. The cubic root of 25111 is about 29.2833889545.

Adding to 25111 its reverse (11152), we get a palindrome (36263).

It can be divided in two parts, 251 and 11, that added together give a palindrome (262).

The spelling of 25111 in words is "twenty-five thousand, one hundred eleven".