25998894 has 60 divisors (see below), whose sum is σ = 60557112. Its totient is φ = 8336520.

The previous prime is 25998893. The next prime is 25998913. The reversal of 25998894 is 49889952.

It is a Harshad number since it is a multiple of its sum of digits (54).

Its product of digits (1866240) is a multiple of the sum of its prime factors (243).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 25998894.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25998893) 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 29 ways as a sum of consecutive naturals, for example, 155599 + ... + 155765.

Almost surely, 2^25998894 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25998894, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30278556).

25998894 is an abundant number, since it is smaller than the sum of its proper divisors (34558218).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25998894 is a wasteful number, since it uses less digits than its factorization.

25998894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243 (or 203 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 54.

The square root of 25998894 is about 5098.9110602167. The cubic root of 25998894 is about 296.2454061137.

The spelling of 25998894 in words is "twenty-five million, nine hundred ninety-eight thousand, eight hundred ninety-four".