204820827425 has 12 divisors (see below), whose sum is σ = 257768541936. Its totient is φ = 161411038800.

The previous prime is 204820827413. The next prime is 204820827511. The reversal of 204820827425 is 524728028402.

It is not a de Polignac number, because 204820827425 - 2¹⁰ = 204820826401 is a prime.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian 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, 61138871 + ... + 61142220.

It is an arithmetic number, because the mean of its divisors is an integer number (21480711828).

Almost surely, 2^204820827425 is an apocalyptic number.

204820827425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

204820827425 is a deficient number, since it is larger than the sum of its proper divisors (52947714511).

204820827425 is a wasteful number, since it uses less digits than its factorization.

204820827425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122281168 (or 122281163 counting only the distinct ones).

The product of its (nonzero) digits is 573440, while the sum is 44.

The spelling of 204820827425 in words is "two hundred four billion, eight hundred twenty million, eight hundred twenty-seven thousand, four hundred twenty-five".