204351021125 has 16 divisors (see below), whose sum is σ = 255164105664. Its totient is φ = 163394899600.

The previous prime is 204351021107. The next prime is 204351021131. The reversal of 204351021125 is 521120153402.

It is a de Polignac number, because none of the positive numbers 2^k-204351021125 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 204351021094 and 204351021103.

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, 190259 + ... + 667008.

It is an arithmetic number, because the mean of its divisors is an integer number (15947756604).

Almost surely, 2^204351021125 is an apocalyptic number.

204351021125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

204351021125 is a deficient number, since it is larger than the sum of its proper divisors (50813084539).

204351021125 is an equidigital number, since it uses as much as digits as its factorization.

204351021125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 859189 (or 859179 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 204351021125 its reverse (521120153402), we get a palindrome (725471174527).

The spelling of 204351021125 in words is "two hundred four billion, three hundred fifty-one million, twenty-one thousand, one hundred twenty-five".