20125800 has 96 divisors (see below), whose sum is σ = 69340800. Its totient is φ = 5365440.

The previous prime is 20125799. The next prime is 20125829. The reversal of 20125800 is 852102.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3537 + ... + 7263.

It is an arithmetic number, because the mean of its divisors is an integer number (722300).

Almost surely, 2^20125800 is an apocalyptic number.

20125800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20125800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34670400).

20125800 is an abundant number, since it is smaller than the sum of its proper divisors (49215000).

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

20125800 is a wasteful number, since it uses less digits than its factorization.

20125800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3752 (or 3737 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 20125800 is about 4486.1787748595. The cubic root of 20125800 is about 272.0096954445.

Adding to 20125800 its reverse (852102), we get a palindrome (20977902).

The spelling of 20125800 in words is "twenty million, one hundred twenty-five thousand, eight hundred".