25989255 has 20 divisors (see below), whose sum is σ = 46588872. Its totient is φ = 13860720.

The previous prime is 25989251. The next prime is 25989289. The reversal of 25989255 is 55298952.

25989255 is a `hidden beast` number, since 2 + 598 + 9 + 2 + 55 = 666.

It is not a de Polignac number, because 25989255 - 2² = 25989251 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 25989255.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25989251) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 31681 + ... + 32490.

Almost surely, 2^25989255 is an apocalyptic number.

25989255 is a deficient number, since it is larger than the sum of its proper divisors (20599617).

25989255 is an equidigital number, since it uses as much as digits as its factorization.

25989255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64188 (or 64179 counting only the distinct ones).

The product of its digits is 324000, while the sum is 45.

The square root of 25989255 is about 5097.9657707756. The cubic root of 25989255 is about 296.2087909352.

It can be divided in two parts, 25989 and 255, that added together give a square (26244 = 162²).

The spelling of 25989255 in words is "twenty-five million, nine hundred eighty-nine thousand, two hundred fifty-five".