205455225 has 12 divisors (see below), whose sum is σ = 339686096. Its totient is φ = 109576080.

The previous prime is 205455209. The next prime is 205455269. The reversal of 205455225 is 522554502.

It is not a de Polignac number, because 205455225 - 2⁴ = 205455209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 205455192 and 205455201.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1369627 + ... + 1369776.

Almost surely, 2^205455225 is an apocalyptic number.

205455225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

205455225 is a deficient number, since it is larger than the sum of its proper divisors (134230871).

205455225 is a wasteful number, since it uses less digits than its factorization.

205455225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2739416 (or 2739411 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 30.

The square root of 205455225 is about 14333.7093942915. The cubic root of 205455225 is about 590.0729824493.

The spelling of 205455225 in words is "two hundred five million, four hundred fifty-five thousand, two hundred twenty-five".