25687412 has 12 divisors (see below), whose sum is σ = 46907616. Its totient is φ = 12285240.

The previous prime is 25687393. The next prime is 25687423. The reversal of 25687412 is 21478652.

It is a congruent number.

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, 139514 + ... + 139697.

It is an arithmetic number, because the mean of its divisors is an integer number (3908968).

Almost surely, 2^25687412 is an apocalyptic number.

It is an amenable number.

25687412 is a deficient number, since it is larger than the sum of its proper divisors (21220204).

25687412 is a wasteful number, since it uses less digits than its factorization.

25687412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279238 (or 279236 counting only the distinct ones).

The product of its digits is 26880, while the sum is 35.

The square root of 25687412 is about 5068.2750517311. The cubic root of 25687412 is about 295.0575852345.

The spelling of 25687412 in words is "twenty-five million, six hundred eighty-seven thousand, four hundred twelve".