25889340 has 72 divisors (see below), whose sum is σ = 75070800. Its totient is φ = 6666240.

The previous prime is 25889333. The next prime is 25889341. The reversal of 25889340 is 4398852.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25889341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57436 + ... + 57884.

It is an arithmetic number, because the mean of its divisors is an integer number (1042650).

Almost surely, 2^25889340 is an apocalyptic number.

25889340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25889340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37535400).

25889340 is an abundant number, since it is smaller than the sum of its proper divisors (49181460).

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

25889340 is a wasteful number, since it uses less digits than its factorization.

25889340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523 (or 490 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 25889340 is about 5088.1568372054. The cubic root of 25889340 is about 295.8287145127.

It can be divided in two parts, 258 and 89340, that added together give a palindrome (89598).

The spelling of 25889340 in words is "twenty-five million, eight hundred eighty-nine thousand, three hundred forty".