25727231 has 2 divisors, whose sum is σ = 25727232. Its totient is φ = 25727230.

The previous prime is 25727227. The next prime is 25727257. The reversal of 25727231 is 13272752.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25727231 - 2² = 25727227 is a prime.

It is a super-2 number, since 2×25727231² = 1323780829854722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25727194 and 25727203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25727291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12863615 + 12863616.

It is an arithmetic number, because the mean of its divisors is an integer number (12863616).

Almost surely, 2^25727231 is an apocalyptic number.

25727231 is a deficient number, since it is larger than the sum of its proper divisors (1).

25727231 is an equidigital number, since it uses as much as digits as its factorization.

25727231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5880, while the sum is 29.

The square root of 25727231 is about 5072.2017901499. The cubic root of 25727231 is about 295.2099663880.

Adding to 25727231 its reverse (13272752), we get a palindrome (38999983).

The spelling of 25727231 in words is "twenty-five million, seven hundred twenty-seven thousand, two hundred thirty-one".