25236191 has 2 divisors, whose sum is σ = 25236192. Its totient is φ = 25236190.

The previous prime is 25236157. The next prime is 25236193. The reversal of 25236191 is 19163252.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25236191 - 2¹⁰ = 25235167 is a prime.

Together with 25236193, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25236193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12618095 + 12618096.

It is an arithmetic number, because the mean of its divisors is an integer number (12618096).

Almost surely, 2^25236191 is an apocalyptic number.

25236191 is a deficient number, since it is larger than the sum of its proper divisors (1).

25236191 is an equidigital number, since it uses as much as digits as its factorization.

25236191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3240, while the sum is 29.

The square root of 25236191 is about 5023.5635757896. The cubic root of 25236191 is about 293.3197246040.

The spelling of 25236191 in words is "twenty-five million, two hundred thirty-six thousand, one hundred ninety-one".