25043040 has 384 divisors, whose sum is σ = 104509440. Its totient is φ = 5529600.

The previous prime is 25043027. The next prime is 25043041. The reversal of 25043040 is 4034052.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25043041) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 807825 + ... + 807855.

It is an arithmetic number, because the mean of its divisors is an integer number (272160).

Almost surely, 2^25043040 is an apocalyptic number.

25043040 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 25043040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52254720).

25043040 is an abundant number, since it is smaller than the sum of its proper divisors (79466400).

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

25043040 is a wasteful number, since it uses less digits than its factorization.

25043040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83 (or 69 counting only the distinct ones).

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

The square root of 25043040 is about 5004.3021491513. The cubic root of 25043040 is about 292.5694772499.

Adding to 25043040 its reverse (4034052), we get a palindrome (29077092).

The spelling of 25043040 in words is "twenty-five million, forty-three thousand, forty".