205121325 has 24 divisors (see below), whose sum is σ = 340879968. Its totient is φ = 108834880.

The previous prime is 205121299. The next prime is 205121333. The reversal of 205121325 is 523121502.

It is not a de Polignac number, because 205121325 - 2⁷ = 205121197 is a prime.

It is a congruent number.

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, 7834 + ... + 21716.

It is an arithmetic number, because the mean of its divisors is an integer number (14203332).

Almost surely, 2^205121325 is an apocalyptic number.

205121325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

205121325 is a deficient number, since it is larger than the sum of its proper divisors (135758643).

205121325 is a wasteful number, since it uses less digits than its factorization.

205121325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14093 (or 14088 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 205121325 is about 14322.0572893701. The cubic root of 205121325 is about 589.7531525064.

Adding to 205121325 its reverse (523121502), we get a palindrome (728242827).

The spelling of 205121325 in words is "two hundred five million, one hundred twenty-one thousand, three hundred twenty-five".