25845020 has 12 divisors (see below), whose sum is σ = 54274584. Its totient is φ = 10338000.

The previous prime is 25845019. The next prime is 25845067. The reversal of 25845020 is 2054852.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 646106 + ... + 646145.

It is an arithmetic number, because the mean of its divisors is an integer number (4522882).

Almost surely, 2^25845020 is an apocalyptic number.

25845020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25845020 is an abundant number, since it is smaller than the sum of its proper divisors (28429564).

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

25845020 is a wasteful number, since it uses less digits than its factorization.

25845020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1292260 (or 1292258 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 25845020 is about 5083.7997600220. The cubic root of 25845020 is about 295.6598082189.

Adding to 25845020 its reverse (2054852), we get a palindrome (27899872).

The spelling of 25845020 in words is "twenty-five million, eight hundred forty-five thousand, twenty".