205241425 has 24 divisors (see below), whose sum is σ = 270458136. Its totient is φ = 153968640.

The previous prime is 205241419. The next prime is 205241429. The reversal of 205241425 is 524142502.

It can be written as a sum of positive squares in 12 ways, for example, as 21150801 + 184090624 = 4599^2 + 13568^2 .

It is not a de Polignac number, because 205241425 - 2⁹ = 205240913 is a prime.

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

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 205241425.

It is not an unprimeable number, because it can be changed into a prime (205241429) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 142509 + ... + 143941.

It is an arithmetic number, because the mean of its divisors is an integer number (11269089).

Almost surely, 2^205241425 is an apocalyptic number.

205241425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

205241425 is a deficient number, since it is larger than the sum of its proper divisors (65216711).

205241425 is a wasteful number, since it uses less digits than its factorization.

205241425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1797 (or 1792 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 205241425 is about 14326.2495092051. The cubic root of 205241425 is about 589.8682316096.

Adding to 205241425 its reverse (524142502), we get a palindrome (729383927).

The spelling of 205241425 in words is "two hundred five million, two hundred forty-one thousand, four hundred twenty-five".