204161425 has 12 divisors (see below), whose sum is σ = 272634460. Its totient is φ = 150765120.

The previous prime is 204161411. The next prime is 204161431. The reversal of 204161425 is 524161402.

204161425 = 10103² + 10104².

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 29604481 + 174556944 = 5441^2 + 13212^2 .

It is not a de Polignac number, because 204161425 - 2⁷ = 204161297 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 204161425.

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 11 ways as a sum of consecutive naturals, for example, 313770 + ... + 314419.

Almost surely, 2^204161425 is an apocalyptic number.

204161425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

204161425 is the 10104-th centered square number.

It is an amenable number.

204161425 is a deficient number, since it is larger than the sum of its proper divisors (68473035).

204161425 is a wasteful number, since it uses less digits than its factorization.

204161425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628212 (or 628207 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 204161425 is about 14288.5067449331. The cubic root of 204161425 is about 588.8317638047.

The spelling of 204161425 in words is "two hundred four million, one hundred sixty-one thousand, four hundred twenty-five".