20125180 has 48 divisors (see below), whose sum is σ = 44876160. Its totient is φ = 7560000.

The previous prime is 20125177. The next prime is 20125241. The reversal of 20125180 is 8152102.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80055 + ... + 80305.

It is an arithmetic number, because the mean of its divisors is an integer number (934920).

Almost surely, 2^20125180 is an apocalyptic number.

20125180 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 20125180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22438080).

20125180 is an abundant number, since it is smaller than the sum of its proper divisors (24750980).

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

20125180 is a wasteful number, since it uses less digits than its factorization.

20125180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490 (or 488 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 20125180 is about 4486.1096732024. The cubic root of 20125180 is about 272.0069022182.

Adding to 20125180 its reverse (8152102), we get a palindrome (28277282).

The spelling of 20125180 in words is "twenty million, one hundred twenty-five thousand, one hundred eighty".