25224231 has 8 divisors (see below), whose sum is σ = 33661440. Its totient is φ = 16801592.

The previous prime is 25224223. The next prime is 25224233. The reversal of 25224231 is 13242252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25224231 - 2³ = 25224223 is a prime.

It is a super-2 number, since 2×25224231² = 1272523659082722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25224198 and 25224207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25224233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1396 + ... + 7238.

It is an arithmetic number, because the mean of its divisors is an integer number (4207680).

Almost surely, 2^25224231 is an apocalyptic number.

25224231 is a deficient number, since it is larger than the sum of its proper divisors (8437209).

25224231 is a wasteful number, since it uses less digits than its factorization.

25224231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7285.

The product of its digits is 960, while the sum is 21.

The square root of 25224231 is about 5022.3730446871. The cubic root of 25224231 is about 293.2733803380.

Adding to 25224231 its reverse (13242252), we get a palindrome (38466483).

The spelling of 25224231 in words is "twenty-five million, two hundred twenty-four thousand, two hundred thirty-one".