204255440525 has 6 divisors (see below), whose sum is σ = 253276746282. Its totient is φ = 163404352400.

The previous prime is 204255440503. The next prime is 204255440531. The reversal of 204255440525 is 525044552402.

It can be written as a sum of positive squares in 3 ways, for example, as 3467207689 + 200788232836 = 58883^2 + 448094^2 .

It is not a de Polignac number, because 204255440525 - 2¹⁶ = 204255374989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4085108786 + ... + 4085108835.

It is an arithmetic number, because the mean of its divisors is an integer number (42212791047).

Almost surely, 2^204255440525 is an apocalyptic number.

204255440525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

204255440525 is a deficient number, since it is larger than the sum of its proper divisors (49021305757).

204255440525 is an equidigital number, since it uses as much as digits as its factorization.

204255440525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8170217631 (or 8170217626 counting only the distinct ones).

The product of its (nonzero) digits is 320000, while the sum is 38.

Adding to 204255440525 its reverse (525044552402), we get a palindrome (729299992927).

The spelling of 204255440525 in words is "two hundred four billion, two hundred fifty-five million, four hundred forty thousand, five hundred twenty-five".