20104125 has 16 divisors (see below), whose sum is σ = 33453888. Its totient is φ = 10722000.

The previous prime is 20104067. The next prime is 20104129. The reversal of 20104125 is 52140102.

It is not a de Polignac number, because 20104125 - 2⁹ = 20103613 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20104129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26431 + ... + 27180.

It is an arithmetic number, because the mean of its divisors is an integer number (2090868).

Almost surely, 2^20104125 is an apocalyptic number.

20104125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20104125 is a deficient number, since it is larger than the sum of its proper divisors (13349763).

20104125 is an equidigital number, since it uses as much as digits as its factorization.

20104125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53629 (or 53619 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 20104125 is about 4483.7623710451. The cubic root of 20104125 is about 271.9120110797.

Adding to 20104125 its reverse (52140102), we get a palindrome (72244227).

The spelling of 20104125 in words is "twenty million, one hundred four thousand, one hundred twenty-five".