25405232 has 20 divisors (see below), whose sum is σ = 50153040. Its totient is φ = 12462528.

The previous prime is 25405231. The next prime is 25405253. The reversal of 25405232 is 23250452.

It is a junction number, because it is equal to n+sod(n) for n = 25405198 and 25405207.

It is not an unprimeable number, because it can be changed into a prime (25405231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14132 + ... + 15827.

It is an arithmetic number, because the mean of its divisors is an integer number (2507652).

Almost surely, 2^25405232 is an apocalyptic number.

It is an amenable number.

25405232 is a deficient number, since it is larger than the sum of its proper divisors (24747808).

25405232 is a wasteful number, since it uses less digits than its factorization.

25405232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30020 (or 30014 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 25405232 is about 5040.3603045814. The cubic root of 25405232 is about 293.9731877379.

Adding to 25405232 its reverse (23250452), we get a palindrome (48655684).

The spelling of 25405232 in words is "twenty-five million, four hundred five thousand, two hundred thirty-two".