25824980 has 12 divisors (see below), whose sum is σ = 54232500. Its totient is φ = 10329984.

The previous prime is 25824979. The next prime is 25825003. The reversal of 25824980 is 8942852.

It can be written as a sum of positive squares in 2 ways, for example, as 2650384 + 23174596 = 1628^2 + 4814^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 645605 + ... + 645644.

It is an arithmetic number, because the mean of its divisors is an integer number (4519375).

Almost surely, 2^25824980 is an apocalyptic number.

25824980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25824980 is an abundant number, since it is smaller than the sum of its proper divisors (28407520).

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

25824980 is a wasteful number, since it uses less digits than its factorization.

25824980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1291258 (or 1291256 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 25824980 is about 5081.8284111135. The cubic root of 25824980 is about 295.5833711256.

The spelling of 25824980 in words is "twenty-five million, eight hundred twenty-four thousand, nine hundred eighty".