25234540 has 24 divisors (see below), whose sum is σ = 53176032. Its totient is φ = 10058880.

The previous prime is 25234537. The next prime is 25234549. The reversal of 25234540 is 4543252.

It is not an unprimeable number, because it can be changed into a prime (25234549) 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, 4192 + ... + 8248.

It is an arithmetic number, because the mean of its divisors is an integer number (2215668).

Almost surely, 2^25234540 is an apocalyptic number.

25234540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25234540 is an abundant number, since it is smaller than the sum of its proper divisors (27941492).

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

25234540 is a wasteful number, since it uses less digits than its factorization.

25234540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4377 (or 4375 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 25234540 is about 5023.3992475215. The cubic root of 25234540 is about 293.3133279515.

Adding to 25234540 its reverse (4543252), we get a palindrome (29777792).

The spelling of 25234540 in words is "twenty-five million, two hundred thirty-four thousand, five hundred forty".