20004125 has 8 divisors (see below), whose sum is σ = 24965304. Its totient is φ = 16003200.

The previous prime is 20004107. The next prime is 20004133. The reversal of 20004125 is 52140002.

It can be written as a sum of positive squares in 4 ways, for example, as 5541316 + 14462809 = 2354^2 + 3803^2 .

It is not a de Polignac number, because 20004125 - 2⁸ = 20003869 is a prime.

It is a Duffinian number.

20004125 is a modest number, since divided by 4125 gives 2000 as remainder.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79892 + ... + 80141.

It is an arithmetic number, because the mean of its divisors is an integer number (3120663).

Almost surely, 2^20004125 is an apocalyptic number.

20004125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20004125 is a deficient number, since it is larger than the sum of its proper divisors (4961179).

20004125 is an equidigital number, since it uses as much as digits as its factorization.

20004125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160048 (or 160038 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 20004125 is about 4472.5971202423. The cubic root of 20004125 is about 271.4604219978.

Adding to 20004125 its reverse (52140002), we get a palindrome (72144127).

The spelling of 20004125 in words is "twenty million, four thousand, one hundred twenty-five".