204664568125 has 40 divisors (see below), whose sum is σ = 274289574240. Its totient is φ = 152187048000.

The previous prime is 204664568107. The next prime is 204664568137. The reversal of 204664568125 is 521865466402.

It is a happy number.

It is not a de Polignac number, because 204664568125 - 2³³ = 196074633533 is a prime.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 466782 + ... + 791968.

It is an arithmetic number, because the mean of its divisors is an integer number (6857239356).

Almost surely, 2^204664568125 is an apocalyptic number.

204664568125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

204664568125 is a deficient number, since it is larger than the sum of its proper divisors (69625006115).

204664568125 is an equidigital number, since it uses as much as digits as its factorization.

204664568125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325279 (or 325264 counting only the distinct ones).

The product of its (nonzero) digits is 2764800, while the sum is 49.

The spelling of 204664568125 in words is "two hundred four billion, six hundred sixty-four million, five hundred sixty-eight thousand, one hundred twenty-five".