204745334655625 has 15 divisors (see below), whose sum is σ = 255850217197267. Its totient is φ = 163795981546000.

The previous prime is 204745334655623. The next prime is 204745334655691. The reversal of 204745334655625 is 526556433547402.

The square root of 204745334655625 is 14308925.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 7 ways, for example, as 171240176859129 + 33505157796496 = 13085877^2 + 5788364^2 .

It is not a de Polignac number, because 204745334655625 - 2¹ = 204745334655623 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204745334655623) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 357436947 + ... + 358009303.

Almost surely, 2^{204745334655625} is an apocalyptic number.

204745334655625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

204745334655625 is the 14308925-th square number.

204745334655625 is the 7154463-rd centered octagonal number.

It is an amenable number.

204745334655625 is a deficient number, since it is larger than the sum of its proper divisors (51104882541642).

204745334655625 is an frugal number, since it uses more digits than its factorization.

204745334655625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1144734 (or 572362 counting only the distinct ones).

The product of its (nonzero) digits is 362880000, while the sum is 61.

The spelling of 204745334655625 in words is "two hundred four trillion, seven hundred forty-five billion, three hundred thirty-four million, six hundred fifty-five thousand, six hundred twenty-five".