205411225 has 12 divisors (see below), whose sum is σ = 255658240. Its totient is φ = 163717200.

The previous prime is 205411207. The next prime is 205411231. The reversal of 205411225 is 522114502.

It is not a de Polignac number, because 205411225 - 2⁷ = 205411097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 205411196 and 205411205.

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, 8385 + ... + 21934.

Almost surely, 2^205411225 is an apocalyptic number.

205411225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

205411225 is a deficient number, since it is larger than the sum of its proper divisors (50247015).

205411225 is a wasteful number, since it uses less digits than its factorization.

205411225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30600 (or 30595 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 205411225 is about 14332.1744686562. The cubic root of 205411225 is about 590.0308563772.

Adding to 205411225 its reverse (522114502), we get a palindrome (727525727).

The spelling of 205411225 in words is "two hundred five million, four hundred eleven thousand, two hundred twenty-five".