205291363325 has 12 divisors (see below), whose sum is σ = 261441326580. Its totient is φ = 159794357760.

The previous prime is 205291363307. The next prime is 205291363391. The reversal of 205291363325 is 523363192502.

It can be written as a sum of positive squares in 6 ways, for example, as 6841605796 + 198449757529 = 82714^2 + 445477^2 .

It is not a de Polignac number, because 205291363325 - 2²⁴ = 205274586109 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 110967380 + ... + 110969229.

It is an arithmetic number, because the mean of its divisors is an integer number (21786777215).

Almost surely, 2^205291363325 is an apocalyptic number.

205291363325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

205291363325 is a deficient number, since it is larger than the sum of its proper divisors (56149963255).

205291363325 is a wasteful number, since it uses less digits than its factorization.

205291363325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221936656 (or 221936651 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 41.

The spelling of 205291363325 in words is "two hundred five billion, two hundred ninety-one million, three hundred sixty-three thousand, three hundred twenty-five".