205336425988 has 6 divisors (see below), whose sum is σ = 359338745486. Its totient is φ = 102668212992.

The previous prime is 205336425967. The next prime is 205336425991. The reversal of 205336425988 is 889524633502.

It can be written as a sum of positive squares in only one way, i.e., 179531858944 + 25804567044 = 423712^2 + 160638^2 .

It is a super-2 number, since 2×205336425988² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 25667053245 + ... + 25667053252.

Almost surely, 2^205336425988 is an apocalyptic number.

It is an amenable number.

205336425988 is a deficient number, since it is larger than the sum of its proper divisors (154002319498).

205336425988 is a wasteful number, since it uses less digits than its factorization.

205336425988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51334106501 (or 51334106499 counting only the distinct ones).

The product of its (nonzero) digits is 12441600, while the sum is 55.

It can be divided in two parts, 20533 and 6425988, that added together give a square (6446521 = 2539²).

The spelling of 205336425988 in words is "two hundred five billion, three hundred thirty-six million, four hundred twenty-five thousand, nine hundred eighty-eight".