205055025 has 24 divisors (see below), whose sum is σ = 387457344. Its totient is φ = 93739200.

The previous prime is 205055017. The next prime is 205055033. The reversal of 205055025 is 520550502.

It is an interprime number because it is at equal distance from previous prime (205055017) and next prime (205055033).

It is not a de Polignac number, because 205055025 - 2³ = 205055017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 205054986 and 205055004.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 194766 + ... + 195815.

It is an arithmetic number, because the mean of its divisors is an integer number (16144056).

Almost surely, 2^205055025 is an apocalyptic number.

205055025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

205055025 is a deficient number, since it is larger than the sum of its proper divisors (182402319).

205055025 is a wasteful number, since it uses less digits than its factorization.

205055025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390601 (or 390596 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 24.

The square root of 205055025 is about 14319.7424907014. The cubic root of 205055025 is about 589.6896049978.

It can be divided in two parts, 2050 and 55025, that added together give a palindrome (57075).

The spelling of 205055025 in words is "two hundred five million, fifty-five thousand, twenty-five".