25361191 has 2 divisors, whose sum is σ = 25361192. Its totient is φ = 25361190.

The previous prime is 25361179. The next prime is 25361197. The reversal of 25361191 is 19116352.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25361191 - 2⁵ = 25361159 is a prime.

It is equal to p_1587025 and since 25361191 and 1587025 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 (25361197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12680595 + 12680596.

It is an arithmetic number, because the mean of its divisors is an integer number (12680596).

Almost surely, 2^25361191 is an apocalyptic number.

25361191 is a deficient number, since it is larger than the sum of its proper divisors (1).

25361191 is an equidigital number, since it uses as much as digits as its factorization.

25361191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1620, while the sum is 28.

The square root of 25361191 is about 5035.9895750488. The cubic root of 25361191 is about 293.8032180025.

It can be divided in two parts, 25361 and 191, that added together give a palindrome (25552).

The spelling of 25361191 in words is "twenty-five million, three hundred sixty-one thousand, one hundred ninety-one".