25838020 has 24 divisors (see below), whose sum is σ = 58434264. Its totient is φ = 9540096.

The previous prime is 25838003. The next prime is 25838027. The reversal of 25838020 is 2083852.

It can be written as a sum of positive squares in 4 ways, for example, as 1077444 + 24760576 = 1038^2 + 4976^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 25838020.

It is not an unprimeable number, because it can be changed into a prime (25838027) 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, 49429 + ... + 49948.

It is an arithmetic number, because the mean of its divisors is an integer number (2434761).

Almost surely, 2^25838020 is an apocalyptic number.

25838020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25838020 is an abundant number, since it is smaller than the sum of its proper divisors (32596244).

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

25838020 is a wasteful number, since it uses less digits than its factorization.

25838020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99399 (or 99397 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 25838020 is about 5083.1112519794. Note that the first 3 decimals coincide. The cubic root of 25838020 is about 295.6331131273.

The spelling of 25838020 in words is "twenty-five million, eight hundred thirty-eight thousand, twenty".