205422025 has 12 divisors (see below), whose sum is σ = 255872512. Its totient is φ = 163596240.

The previous prime is 205422001. The next prime is 205422029. The reversal of 205422025 is 520224502.

It is a happy number.

It is not a de Polignac number, because 205422025 - 2¹³ = 205413833 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 205421987 and 205422005.

It is not an unprimeable number, because it can be changed into a prime (205422029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12849 + ... + 23998.

Almost surely, 2^205422025 is an apocalyptic number.

205422025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

205422025 is a deficient number, since it is larger than the sum of its proper divisors (50450487).

205422025 is a wasteful number, since it uses less digits than its factorization.

205422025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37080 (or 37075 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 205422025 is about 14332.5512383525. The cubic root of 205422025 is about 590.0411969701.

Adding to 205422025 its reverse (520224502), we get a palindrome (725646527).

The spelling of 205422025 in words is "two hundred five million, four hundred twenty-two thousand, twenty-five".