205156225 has 12 divisors (see below), whose sum is σ = 260311216. Its totient is φ = 160307280.

The previous prime is 205156219. The next prime is 205156241. The reversal of 205156225 is 522651502.

205156225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 205156225 - 2¹³ = 205148033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 205156193 and 205156202.

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, 94347 + ... + 96496.

Almost surely, 2^205156225 is an apocalyptic number.

205156225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

205156225 is a deficient number, since it is larger than the sum of its proper divisors (55154991).

205156225 is a wasteful number, since it uses less digits than its factorization.

205156225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190896 (or 190891 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 205156225 is about 14323.2756379258. The cubic root of 205156225 is about 589.7865981071.

The spelling of 205156225 in words is "two hundred five million, one hundred fifty-six thousand, two hundred twenty-five".