25630312 has 8 divisors (see below), whose sum is σ = 48056850. Its totient is φ = 12815152.

The previous prime is 25630261. The next prime is 25630333. The reversal of 25630312 is 21303652.

It can be written as a sum of positive squares in only one way, i.e., 24344356 + 1285956 = 4934^2 + 1134^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1601887 + ... + 1601902.

Almost surely, 2^25630312 is an apocalyptic number.

It is an amenable number.

25630312 is a deficient number, since it is larger than the sum of its proper divisors (22426538).

25630312 is a wasteful number, since it uses less digits than its factorization.

25630312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3203795 (or 3203791 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 25630312 is about 5062.6388376024. The cubic root of 25630312 is about 294.8387973046.

Adding to 25630312 its reverse (21303652), we get a palindrome (46933964).

The spelling of 25630312 in words is "twenty-five million, six hundred thirty thousand, three hundred twelve".