25004820 has 48 divisors (see below), whose sum is σ = 70273728. Its totient is φ = 6643200.

The previous prime is 25004813. The next prime is 25004821. The reversal of 25004820 is 2840052.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25004821) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 20220 + ... + 21420.

It is an arithmetic number, because the mean of its divisors is an integer number (1464036).

Almost surely, 2^25004820 is an apocalyptic number.

25004820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25004820 is an abundant number, since it is smaller than the sum of its proper divisors (45268908).

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

25004820 is a wasteful number, since it uses less digits than its factorization.

25004820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1560 (or 1558 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 25004820 is about 5000.4819767698. The cubic root of 25004820 is about 292.4205643011.

Adding to 25004820 its reverse (2840052), we get a palindrome (27844872).

The spelling of 25004820 in words is "twenty-five million, four thousand, eight hundred twenty".