25331232 has 24 divisors (see below), whose sum is σ = 66494736. Its totient is φ = 8443712.

The previous prime is 25331231. The next prime is 25331249. The reversal of 25331232 is 23213352.

It is a tau number, because it is divible by the number of its divisors (24).

It is a junction number, because it is equal to n+sod(n) for n = 25331199 and 25331208.

It is not an unprimeable number, because it can be changed into a prime (25331231) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 131838 + ... + 132029.

It is an arithmetic number, because the mean of its divisors is an integer number (2770614).

Almost surely, 2^25331232 is an apocalyptic number.

It is an amenable number.

25331232 is an abundant number, since it is smaller than the sum of its proper divisors (41163504).

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

25331232 is a wasteful number, since it uses less digits than its factorization.

25331232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263880 (or 263872 counting only the distinct ones).

The product of its digits is 1080, while the sum is 21.

The square root of 25331232 is about 5033.0142062188. The cubic root of 25331232 is about 293.6874831800.

Adding to 25331232 its reverse (23213352), we get a palindrome (48544584).

The spelling of 25331232 in words is "twenty-five million, three hundred thirty-one thousand, two hundred thirty-two".