25804828 has 12 divisors (see below), whose sum is σ = 51609712. Its totient is φ = 11059200.

The previous prime is 25804817. The next prime is 25804829. The reversal of 25804828 is 82840852.

25804828 = 1917² + 1918² + ... + 1923².

25804828 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25804829) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 460773 + ... + 460828.

Almost surely, 2^25804828 is an apocalyptic number.

25804828 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

25804828 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

25804828 is a wasteful number, since it uses less digits than its factorization.

25804828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 921612 (or 921610 counting only the distinct ones).

The product of its (nonzero) digits is 40960, while the sum is 37.

The square root of 25804828 is about 5079.8452732342. The cubic root of 25804828 is about 295.5064669533.

It can be divided in two parts, 258048 and 28, that multiplied together give a square (7225344 = 2688²).

The spelling of 25804828 in words is "twenty-five million, eight hundred four thousand, eight hundred twenty-eight".