25305532 has 24 divisors (see below), whose sum is σ = 51004800. Its totient is φ = 10760880.

The previous prime is 25305529. The next prime is 25305541. The reversal of 25305532 is 23550352.

It is a junction number, because it is equal to n+sod(n) for n = 25305497 and 25305506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 219 + ... + 7117.

It is an arithmetic number, because the mean of its divisors is an integer number (2125200).

Almost surely, 2^25305532 is an apocalyptic number.

It is an amenable number.

25305532 is an abundant number, since it is smaller than the sum of its proper divisors (25699268).

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

25305532 is a wasteful number, since it uses less digits than its factorization.

25305532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7041 (or 7039 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 25.

The square root of 25305532 is about 5030.4604163039. The cubic root of 25305532 is about 293.5881285927.

Adding to 25305532 its reverse (23550352), we get a palindrome (48855884).

The spelling of 25305532 in words is "twenty-five million, three hundred five thousand, five hundred thirty-two".