25523191 has 2 divisors, whose sum is σ = 25523192. Its totient is φ = 25523190.

The previous prime is 25523177. The next prime is 25523203. The reversal of 25523191 is 19132552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25523191 - 2⁵ = 25523159 is a prime.

It is equal to p_1596511 and since 25523191 and 1596511 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25523101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12761595 + 12761596.

It is an arithmetic number, because the mean of its divisors is an integer number (12761596).

Almost surely, 2^25523191 is an apocalyptic number.

25523191 is a deficient number, since it is larger than the sum of its proper divisors (1).

25523191 is an equidigital number, since it uses as much as digits as its factorization.

25523191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2700, while the sum is 28.

The square root of 25523191 is about 5052.0481985033. The cubic root of 25523191 is about 294.4274675496.

The spelling of 25523191 in words is "twenty-five million, five hundred twenty-three thousand, one hundred ninety-one".