25023820 has 24 divisors (see below), whose sum is σ = 54246528. Its totient is φ = 9686400.

The previous prime is 25023797. The next prime is 25023821. The reversal of 25023820 is 2832052.

It is a junction number, because it is equal to n+sod(n) for n = 25023791 and 25023800.

It is not an unprimeable number, because it can be changed into a prime (25023821) 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, 19561 + ... + 20800.

It is an arithmetic number, because the mean of its divisors is an integer number (2260272).

Almost surely, 2^25023820 is an apocalyptic number.

25023820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25023820 is an abundant number, since it is smaller than the sum of its proper divisors (29222708).

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

25023820 is a wasteful number, since it uses less digits than its factorization.

25023820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40401 (or 40399 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 25023820 is about 5002.3814328777. The cubic root of 25023820 is about 292.4946111458.

Adding to 25023820 its reverse (2832052), we get a palindrome (27855872).

The spelling of 25023820 in words is "twenty-five million, twenty-three thousand, eight hundred twenty".