25887890 has 16 divisors (see below), whose sum is σ = 53255232. Its totient is φ = 8875824.

The previous prime is 25887881. The next prime is 25887919. The reversal of 25887890 is 9878852.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 184844 + ... + 184983.

It is an arithmetic number, because the mean of its divisors is an integer number (3328452).

Almost surely, 2^25887890 is an apocalyptic number.

25887890 is an abundant number, since it is smaller than the sum of its proper divisors (27367342).

25887890 is a wasteful number, since it uses less digits than its factorization.

25887890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369841.

The product of its (nonzero) digits is 322560, while the sum is 47.

The square root of 25887890 is about 5088.0143474640. The cubic root of 25887890 is about 295.8231915234.

The spelling of 25887890 in words is "twenty-five million, eight hundred eighty-seven thousand, eight hundred ninety".