25103231 has 2 divisors, whose sum is σ = 25103232. Its totient is φ = 25103230.

The previous prime is 25103227. The next prime is 25103233. The reversal of 25103231 is 13230152.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25103231 - 2² = 25103227 is a prime.

It is a super-2 number, since 2×25103231² = 1260344413278722, which contains 22 as substring.

Together with 25103233, 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 (25103233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12551615 + 12551616.

It is an arithmetic number, because the mean of its divisors is an integer number (12551616).

Almost surely, 2^25103231 is an apocalyptic number.

25103231 is a deficient number, since it is larger than the sum of its proper divisors (1).

25103231 is an equidigital number, since it uses as much as digits as its factorization.

25103231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 25103231 is about 5010.3124653059. The cubic root of 25103231 is about 292.8036868296.

Adding to 25103231 its reverse (13230152), we get a palindrome (38333383).

The spelling of 25103231 in words is "twenty-five million, one hundred three thousand, two hundred thirty-one".