205285025 has 48 divisors (see below), whose sum is σ = 295963200. Its totient is φ = 139680000.

The previous prime is 205285021. The next prime is 205285027. The reversal of 205285025 is 520582502.

It is not a de Polignac number, because 205285025 - 2² = 205285021 is a prime.

It is not an unprimeable number, because it can be changed into a prime (205285021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 527531 + ... + 527919.

It is an arithmetic number, because the mean of its divisors is an integer number (6165900).

Almost surely, 2^205285025 is an apocalyptic number.

205285025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

205285025 is a deficient number, since it is larger than the sum of its proper divisors (90678175).

205285025 is a wasteful number, since it uses less digits than its factorization.

205285025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530 (or 525 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 29.

The square root of 205285025 is about 14327.7711106787. The cubic root of 205285025 is about 589.9099977622.

The spelling of 205285025 in words is "two hundred five million, two hundred eighty-five thousand, twenty-five".