204787926225 has 27 divisors (see below), whose sum is σ = 366810088593. Its totient is φ = 109216607040.

The previous prime is 204787926191. The next prime is 204787926293. The reversal of 204787926225 is 522629787402.

The square root of 204787926225 is 452535.

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

204787926225 is a `hidden beast` number, since 2 + 0 + 4 + 7 + 8 + 7 + 9 + 2 + 622 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 783944001 + 204003982224 = 27999^2 + 451668^2 .

It is not a de Polignac number, because 204787926225 - 2²³ = 204779537617 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 6772941 + ... + 6803109.

Almost surely, 2^204787926225 is an apocalyptic number.

204787926225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

204787926225 is the 452535-th square number.

204787926225 is the 226268-th centered octagonal number.

It is an amenable number.

204787926225 is a deficient number, since it is larger than the sum of its proper divisors (162022162368).

204787926225 is an frugal number, since it uses more digits than its factorization.

204787926225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60354 (or 30177 counting only the distinct ones).

The product of its (nonzero) digits is 6773760, while the sum is 54.

The spelling of 204787926225 in words is "two hundred four billion, seven hundred eighty-seven million, nine hundred twenty-six thousand, two hundred twenty-five".