25858940 has 12 divisors (see below), whose sum is σ = 54303816. Its totient is φ = 10343568.

The previous prime is 25858919. The next prime is 25858957. The reversal of 25858940 is 4985852.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

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 3 ways as a sum of consecutive naturals, for example, 646454 + ... + 646493.

It is an arithmetic number, because the mean of its divisors is an integer number (4525318).

Almost surely, 2^25858940 is an apocalyptic number.

25858940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25858940 is an abundant number, since it is smaller than the sum of its proper divisors (28444876).

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

25858940 is a wasteful number, since it uses less digits than its factorization.

25858940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1292956 (or 1292954 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 41.

The square root of 25858940 is about 5085.1686304389. The cubic root of 25858940 is about 295.7128789959.

The spelling of 25858940 in words is "twenty-five million, eight hundred fifty-eight thousand, nine hundred forty".