20025580 has 12 divisors (see below), whose sum is σ = 42053760. Its totient is φ = 8010224.

The previous prime is 20025559. The next prime is 20025581. The reversal of 20025580 is 8552002.

It is not an unprimeable number, because it can be changed into a prime (20025581) by changing a digit.

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, 500620 + ... + 500659.

It is an arithmetic number, because the mean of its divisors is an integer number (3504480).

Almost surely, 2^20025580 is an apocalyptic number.

20025580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20025580 is an abundant number, since it is smaller than the sum of its proper divisors (22028180).

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

20025580 is a wasteful number, since it uses less digits than its factorization.

20025580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001288 (or 1001286 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 20025580 is about 4474.9949720642. The cubic root of 20025580 is about 271.5574370283.

Adding to 20025580 its reverse (8552002), we get a palindrome (28577582).

The spelling of 20025580 in words is "twenty million, twenty-five thousand, five hundred eighty".