204242333525 has 24 divisors (see below), whose sum is σ = 253955190024. Its totient is φ = 162946252800.

The previous prime is 204242333473. The next prime is 204242333549. The reversal of 204242333525 is 525333242402.

It can be written as a sum of positive squares in 12 ways, for example, as 32098663921 + 172143669604 = 179161^2 + 414902^2 .

It is not a de Polignac number, because 204242333525 - 2¹² = 204242329429 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16049165 + ... + 16061885.

It is an arithmetic number, because the mean of its divisors is an integer number (10581466251).

Almost surely, 2^204242333525 is an apocalyptic number.

204242333525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

204242333525 is a deficient number, since it is larger than the sum of its proper divisors (49712856499).

204242333525 is a wasteful number, since it uses less digits than its factorization.

204242333525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14441 (or 14436 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 35.

Adding to 204242333525 its reverse (525333242402), we get a palindrome (729575575927).

The spelling of 204242333525 in words is "two hundred four billion, two hundred forty-two million, three hundred thirty-three thousand, five hundred twenty-five".