25887855 has 32 divisors (see below), whose sum is σ = 50125824. Its totient is φ = 11137536.

The previous prime is 25887853. The next prime is 25887871. The reversal of 25887855 is 55878852.

It is a happy number.

It is not a de Polignac number, because 25887855 - 2¹ = 25887853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25887853) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5467 + ... + 9036.

It is an arithmetic number, because the mean of its divisors is an integer number (1566432).

Almost surely, 2^25887855 is an apocalyptic number.

25887855 is a deficient number, since it is larger than the sum of its proper divisors (24237969).

25887855 is a wasteful number, since it uses less digits than its factorization.

25887855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14535.

The product of its digits is 896000, while the sum is 48.

The square root of 25887855 is about 5088.0109080072. The cubic root of 25887855 is about 295.8230582073.

The spelling of 25887855 in words is "twenty-five million, eight hundred eighty-seven thousand, eight hundred fifty-five".