205102325320 has 32 divisors (see below), whose sum is σ = 462576422520. Its totient is φ = 81846051840.

The previous prime is 205102325303. The next prime is 205102325321. The reversal of 205102325320 is 23523201502.

It can be written as a sum of positive squares in 4 ways, for example, as 144121973956 + 60980351364 = 379634^2 + 246942^2 .

It is a super-2 number, since 2×205102325320² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (205102325321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6072897 + ... + 6106576.

Almost surely, 2^205102325320 is an apocalyptic number.

205102325320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

205102325320 is an abundant number, since it is smaller than the sum of its proper divisors (257474097200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

205102325320 is a wasteful number, since it uses less digits than its factorization.

205102325320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12179905 (or 12179901 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

Adding to 205102325320 its reverse (23523201502), we get a palindrome (228625526822).

The spelling of 205102325320 in words is "two hundred five billion, one hundred two million, three hundred twenty-five thousand, three hundred twenty".