25631245 has 8 divisors (see below), whose sum is σ = 30919680. Its totient is φ = 20396880.

The previous prime is 25631233. The next prime is 25631279. The reversal of 25631245 is 54213652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25631245 - 2⁷ = 25631117 is a prime.

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 12465 + ... + 14374.

It is an arithmetic number, because the mean of its divisors is an integer number (3864960).

Almost surely, 2^25631245 is an apocalyptic number.

It is an amenable number.

25631245 is a deficient number, since it is larger than the sum of its proper divisors (5288435).

25631245 is a wasteful number, since it uses less digits than its factorization.

25631245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27035.

The product of its digits is 7200, while the sum is 28.

The square root of 25631245 is about 5062.7309823849. The cubic root of 25631245 is about 294.8423748558.

Adding to 25631245 its reverse (54213652), we get a palindrome (79844897).

The spelling of 25631245 in words is "twenty-five million, six hundred thirty-one thousand, two hundred forty-five".