25236231 has 4 divisors (see below), whose sum is σ = 33648312. Its totient is φ = 16824152.

The previous prime is 25236229. The next prime is 25236259. The reversal of 25236231 is 13263252.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25236231 - 2¹ = 25236229 is a prime.

It is a super-2 number, since 2×25236231² = 1273734710170722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25236031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4206036 + ... + 4206041.

It is an arithmetic number, because the mean of its divisors is an integer number (8412078).

Almost surely, 2^25236231 is an apocalyptic number.

25236231 is a deficient number, since it is larger than the sum of its proper divisors (8412081).

25236231 is an equidigital number, since it uses as much as digits as its factorization.

25236231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8412080.

The product of its digits is 2160, while the sum is 24.

The square root of 25236231 is about 5023.5675570256. The cubic root of 25236231 is about 293.3198795769.

Adding to 25236231 its reverse (13263252), we get a palindrome (38499483).

The spelling of 25236231 in words is "twenty-five million, two hundred thirty-six thousand, two hundred thirty-one".