25823040 has 112 divisors (see below), whose sum is σ = 84319872. Its totient is φ = 6690816.

The previous prime is 25823029. The next prime is 25823047. The reversal of 25823040 is 4032852.

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 25823040.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25823047) 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, 35157 + ... + 35883.

It is an arithmetic number, because the mean of its divisors is an integer number (752856).

Almost surely, 2^25823040 is an apocalyptic number.

25823040 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 25823040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42159936).

25823040 is an abundant number, since it is smaller than the sum of its proper divisors (58496832).

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

25823040 is a wasteful number, since it uses less digits than its factorization.

25823040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784 (or 774 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 25823040 is about 5081.6375313475. The cubic root of 25823040 is about 295.5759694277.

Adding to 25823040 its reverse (4032852), we get a palindrome (29855892).

The spelling of 25823040 in words is "twenty-five million, eight hundred twenty-three thousand, forty".