25232224 has 48 divisors (see below), whose sum is σ = 51767856. Its totient is φ = 12096000.

The previous prime is 25232213. The next prime is 25232239. The reversal of 25232224 is 42223252.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 25232195 and 25232204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119479 + ... + 119689.

It is an arithmetic number, because the mean of its divisors is an integer number (1078497).

Almost surely, 2^25232224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25232224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25883928).

25232224 is an abundant number, since it is smaller than the sum of its proper divisors (26535632).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25232224 is a wasteful number, since it uses less digits than its factorization.

25232224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359 (or 351 counting only the distinct ones).

The product of its digits is 1920, while the sum is 22.

The square root of 25232224 is about 5023.1687210366. The cubic root of 25232224 is about 293.3043543457.

Adding to 25232224 its reverse (42223252), we get a palindrome (67455476).

The spelling of 25232224 in words is "twenty-five million, two hundred thirty-two thousand, two hundred twenty-four".