25326240 has 96 divisors (see below), whose sum is σ = 84006720. Its totient is φ = 6395904.

The previous prime is 25326239. The next prime is 25326247. The reversal of 25326240 is 4262352.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 25326240.

It is not an unprimeable number, because it can be changed into a prime (25326247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7732 + ... + 10508.

It is an arithmetic number, because the mean of its divisors is an integer number (875070).

Almost surely, 2^25326240 is an apocalyptic number.

25326240 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 25326240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42003360).

25326240 is an abundant number, since it is smaller than the sum of its proper divisors (58680480).

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

25326240 is a wasteful number, since it uses less digits than its factorization.

25326240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2814 (or 2806 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 25326240 is about 5032.5182563007. The cubic root of 25326240 is about 293.6681896818.

Adding to 25326240 its reverse (4262352), we get a palindrome (29588592).

The spelling of 25326240 in words is "twenty-five million, three hundred twenty-six thousand, two hundred forty".