25224432 has 40 divisors (see below), whose sum is σ = 67413840. Its totient is φ = 8117760.

The previous prime is 25224431. The next prime is 25224439. The reversal of 25224432 is 23442252.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25224431) 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, 7669 + ... + 10452.

It is an arithmetic number, because the mean of its divisors is an integer number (1685346).

Almost surely, 2^25224432 is an apocalyptic number.

It is an amenable number.

25224432 is an abundant number, since it is smaller than the sum of its proper divisors (42189408).

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

25224432 is a wasteful number, since it uses less digits than its factorization.

25224432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18161 (or 18155 counting only the distinct ones).

The product of its digits is 3840, while the sum is 24.

The square root of 25224432 is about 5022.3930551083. The cubic root of 25224432 is about 293.2741593217.

Adding to 25224432 its reverse (23442252), we get a palindrome (48666684).

The spelling of 25224432 in words is "twenty-five million, two hundred twenty-four thousand, four hundred thirty-two".