25638064 has 10 divisors (see below), whose sum is σ = 49673780. Its totient is φ = 12819024.

The previous prime is 25638047. The next prime is 25638073. The reversal of 25638064 is 46083652.

It is a happy 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 as a sum of consecutive naturals, namely, 801174 + ... + 801205.

It is an arithmetic number, because the mean of its divisors is an integer number (4967378).

Almost surely, 2^25638064 is an apocalyptic number.

It is an amenable number.

25638064 is a deficient number, since it is larger than the sum of its proper divisors (24035716).

25638064 is a wasteful number, since it uses less digits than its factorization.

25638064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1602387 (or 1602381 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 25638064 is about 5063.4043883537. The cubic root of 25638064 is about 294.8685194030.

The spelling of 25638064 in words is "twenty-five million, six hundred thirty-eight thousand, sixty-four".