205081925 has 12 divisors (see below), whose sum is σ = 255598596. Its totient is φ = 163228800.

The previous prime is 205081913. The next prime is 205081937. The reversal of 205081925 is 529180502.

It is an interprime number because it is at equal distance from previous prime (205081913) and next prime (205081937).

It can be written as a sum of positive squares in 6 ways, for example, as 55606849 + 149475076 = 7457^2 + 12226^2 .

It is not a de Polignac number, because 205081925 - 2⁴ = 205081909 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 205081891 and 205081900.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 15896 + ... + 25745.

It is an arithmetic number, because the mean of its divisors is an integer number (21299883).

Almost surely, 2^205081925 is an apocalyptic number.

205081925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

205081925 is a deficient number, since it is larger than the sum of its proper divisors (50516671).

205081925 is a wasteful number, since it uses less digits than its factorization.

205081925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41848 (or 41843 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 205081925 is about 14320.6817225997. The cubic root of 205081925 is about 589.7153898764.

The spelling of 205081925 in words is "two hundred five million, eighty-one thousand, nine hundred twenty-five".