25608887 has 4 divisors (see below), whose sum is σ = 26233536. Its totient is φ = 24984240.

The previous prime is 25608881. The next prime is 25608889. The reversal of 25608887 is 78880652.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25608887 - 2⁶ = 25608823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25608881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 312263 + ... + 312344.

It is an arithmetic number, because the mean of its divisors is an integer number (6558384).

Almost surely, 2^25608887 is an apocalyptic number.

25608887 is a deficient number, since it is larger than the sum of its proper divisors (624649).

25608887 is an equidigital number, since it uses as much as digits as its factorization.

25608887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624648.

The product of its (nonzero) digits is 215040, while the sum is 44.

The square root of 25608887 is about 5060.5224038631. The cubic root of 25608887 is about 294.7566200997.

The spelling of 25608887 in words is "twenty-five million, six hundred eight thousand, eight hundred eighty-seven".