25832540 has 24 divisors (see below), whose sum is σ = 54416880. Its totient is φ = 10300928.

The previous prime is 25832531. The next prime is 25832557. The reversal of 25832540 is 4523852.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5231 + ... + 8889.

It is an arithmetic number, because the mean of its divisors is an integer number (2267370).

Almost surely, 2^25832540 is an apocalyptic number.

25832540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25832540 is an abundant number, since it is smaller than the sum of its proper divisors (28584340).

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

25832540 is a wasteful number, since it uses less digits than its factorization.

25832540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4021 (or 4019 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 25832540 is about 5082.5721834520. The cubic root of 25832540 is about 295.6122113192.

The spelling of 25832540 in words is "twenty-five million, eight hundred thirty-two thousand, five hundred forty".