25967540 has 24 divisors (see below), whose sum is σ = 55302912. Its totient is φ = 10240160.

The previous prime is 25967533. The next prime is 25967561. The reversal of 25967540 is 4576952.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 25967494 and 25967503.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 7724 + ... + 10563.

It is an arithmetic number, because the mean of its divisors is an integer number (2304288).

Almost surely, 2^25967540 is an apocalyptic number.

25967540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25967540 is an abundant number, since it is smaller than the sum of its proper divisors (29335372).

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

25967540 is a wasteful number, since it uses less digits than its factorization.

25967540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18367 (or 18365 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 38.

The square root of 25967540 is about 5095.8355546466. The cubic root of 25967540 is about 296.1262700861.

The spelling of 25967540 in words is "twenty-five million, nine hundred sixty-seven thousand, five hundred forty".