25790144 has 56 divisors (see below), whose sum is σ = 54620160. Its totient is φ = 12047616.

The previous prime is 25790143. The next prime is 25790159. The reversal of 25790144 is 44109752.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 25790144.

It is not an unprimeable number, because it can be changed into a prime (25790143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154349 + ... + 154515.

It is an arithmetic number, because the mean of its divisors is an integer number (975360).

Almost surely, 2^25790144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25790144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27310080).

25790144 is an abundant number, since it is smaller than the sum of its proper divisors (28830016).

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

25790144 is a wasteful number, since it uses less digits than its factorization.

25790144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325 (or 315 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 25790144 is about 5078.3997479521. The cubic root of 25790144 is about 295.4504045724.

Adding to 25790144 its reverse (44109752), we get a palindrome (69899896).

The spelling of 25790144 in words is "twenty-five million, seven hundred ninety thousand, one hundred forty-four".