25023240 has 192 divisors, whose sum is σ = 90979200. Its totient is φ = 5913600.

The previous prime is 25023233. The next prime is 25023253. The reversal of 25023240 is 4232052.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 281116 + ... + 281204.

It is an arithmetic number, because the mean of its divisors is an integer number (473850).

Almost surely, 2^25023240 is an apocalyptic number.

25023240 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 25023240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45489600).

25023240 is an abundant number, since it is smaller than the sum of its proper divisors (65955960).

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

25023240 is a wasteful number, since it uses less digits than its factorization.

25023240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188 (or 181 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 25023240 is about 5002.3234601533. The cubic root of 25023240 is about 292.4923513231.

Adding to 25023240 its reverse (4232052), we get a palindrome (29255292).

The spelling of 25023240 in words is "twenty-five million, twenty-three thousand, two hundred forty".