204425625621215 has 8 divisors (see below), whose sum is σ = 245359822740000. Its totient is φ = 163507785833952.

The previous prime is 204425625621187. The next prime is 204425625621221. The reversal of 204425625621215 is 512126526524402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204425625621215 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 204425625621215.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4089305384 + ... + 4089355373.

It is an arithmetic number, because the mean of its divisors is an integer number (30669977842500).

Almost surely, 2^{204425625621215} is an apocalyptic number.

204425625621215 is a deficient number, since it is larger than the sum of its proper divisors (40934197118785).

204425625621215 is an equidigital number, since it uses as much as digits as its factorization.

204425625621215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8178665761.

The product of its (nonzero) digits is 2304000, while the sum is 47.

The spelling of 204425625621215 in words is "two hundred four trillion, four hundred twenty-five billion, six hundred twenty-five million, six hundred twenty-one thousand, two hundred fifteen".