204001025 has 6 divisors (see below), whose sum is σ = 252961302. Its totient is φ = 163200800.

The previous prime is 204001013. The next prime is 204001067. The reversal of 204001025 is 520100402.

It can be written as a sum of positive squares in 3 ways, for example, as 3013696 + 200987329 = 1736^2 + 14177^2 .

It is not a de Polignac number, because 204001025 - 2¹⁶ = 203935489 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4079996 + ... + 4080045.

It is an arithmetic number, because the mean of its divisors is an integer number (42160217).

Almost surely, 2^204001025 is an apocalyptic number.

204001025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

204001025 is a deficient number, since it is larger than the sum of its proper divisors (48960277).

204001025 is an equidigital number, since it uses as much as digits as its factorization.

204001025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8160051 (or 8160046 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 204001025 is about 14282.8927392178. The cubic root of 204001025 is about 588.6775176237.

Adding to 204001025 its reverse (520100402), we get a palindrome (724101427).

The spelling of 204001025 in words is "two hundred four million, one thousand, twenty-five".