205761225 has 12 divisors (see below), whose sum is σ = 340192016. Its totient is φ = 109739280.

The previous prime is 205761223. The next prime is 205761313. The reversal of 205761225 is 522167502.

It is not a de Polignac number, because 205761225 - 2¹ = 205761223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 205761192 and 205761201.

It is not an unprimeable number, because it can be changed into a prime (205761223) 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 11 ways as a sum of consecutive naturals, for example, 1371667 + ... + 1371816.

Almost surely, 2^205761225 is an apocalyptic number.

205761225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

205761225 is a deficient number, since it is larger than the sum of its proper divisors (134430791).

205761225 is a wasteful number, since it uses less digits than its factorization.

205761225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2743496 (or 2743491 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 205761225 is about 14344.3795613474. The cubic root of 205761225 is about 590.3657839020.

The spelling of 205761225 in words is "two hundred five million, seven hundred sixty-one thousand, two hundred twenty-five".