20025800 has 24 divisors (see below), whose sum is σ = 46560450. Its totient is φ = 8010240.

The previous prime is 20025787. The next prime is 20025823. The reversal of 20025800 is 852002.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 12264004 + 7761796 = 3502^2 + 2786^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 49865 + ... + 50264.

Almost surely, 2^20025800 is an apocalyptic number.

20025800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20025800 is an abundant number, since it is smaller than the sum of its proper divisors (26534650).

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

20025800 is a wasteful number, since it uses less digits than its factorization.

20025800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100145 (or 100136 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 20025800 is about 4475.0195530299. The cubic root of 20025800 is about 271.5584314634.

Adding to 20025800 its reverse (852002), we get a palindrome (20877802).

The spelling of 20025800 in words is "twenty million, twenty-five thousand, eight hundred".