25983940 has 24 divisors (see below), whose sum is σ = 55383552. Its totient is φ = 10237920.

The previous prime is 25983931. The next prime is 25983989. The reversal of 25983940 is 4938952.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 25983893 and 25983902.

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, 8356 + ... + 11035.

It is an arithmetic number, because the mean of its divisors is an integer number (2307648).

Almost surely, 2^25983940 is an apocalyptic number.

25983940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25983940 is an abundant number, since it is smaller than the sum of its proper divisors (29399612).

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

25983940 is a wasteful number, since it uses less digits than its factorization.

25983940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19467 (or 19465 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 25983940 is about 5097.4444577651. Note that the first 4 decimals coincide. The cubic root of 25983940 is about 296.1885972429.

The spelling of 25983940 in words is "twenty-five million, nine hundred eighty-three thousand, nine hundred forty".