25513232 has 20 divisors (see below), whose sum is σ = 49533660. Its totient is φ = 12730368.

The previous prime is 25513199. The next prime is 25513247. The reversal of 25513232 is 23231552.

It can be written as a sum of positive squares in 2 ways, for example, as 6885376 + 18627856 = 2624^2 + 4316^2 .

It is a junction number, because it is equal to n+sod(n) for n = 25513198 and 25513207.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8144 + ... + 10832.

It is an arithmetic number, because the mean of its divisors is an integer number (2476683).

Almost surely, 2^25513232 is an apocalyptic number.

It is an amenable number.

25513232 is a deficient number, since it is larger than the sum of its proper divisors (24020428).

25513232 is a wasteful number, since it uses less digits than its factorization.

25513232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3290 (or 3284 counting only the distinct ones).

The product of its digits is 1800, while the sum is 23.

The square root of 25513232 is about 5051.0624624924. The cubic root of 25513232 is about 294.3891679419.

Adding to 25513232 its reverse (23231552), we get a palindrome (48744784).

The spelling of 25513232 in words is "twenty-five million, five hundred thirteen thousand, two hundred thirty-two".