25261111 has 2 divisors, whose sum is σ = 25261112. Its totient is φ = 25261110.

The previous prime is 25261109. The next prime is 25261129. The reversal of 25261111 is 11116252.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25261111 - 2¹ = 25261109 is a prime.

Together with 25261109, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25261141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12630555 + 12630556.

It is an arithmetic number, because the mean of its divisors is an integer number (12630556).

Almost surely, 2^25261111 is an apocalyptic number.

25261111 is a deficient number, since it is larger than the sum of its proper divisors (1).

25261111 is an equidigital number, since it uses as much as digits as its factorization.

25261111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120, while the sum is 19.

The square root of 25261111 is about 5026.0432747839. The cubic root of 25261111 is about 293.4162410563.

Adding to 25261111 its reverse (11116252), we get a palindrome (36377363).

The spelling of 25261111 in words is "twenty-five million, two hundred sixty-one thousand, one hundred eleven".