205465025 has 12 divisors (see below), whose sum is σ = 255517500. Its totient is φ = 163894080.

The previous prime is 205464991. The next prime is 205465061. The reversal of 205465025 is 520564502.

205465025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 31013761 + 174451264 = 5569^2 + 13208^2 .

It is not a de Polignac number, because 205465025 - 2⁸ = 205464769 is a prime.

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, 3050 + ... + 20499.

It is an arithmetic number, because the mean of its divisors is an integer number (21293125).

Almost surely, 2^205465025 is an apocalyptic number.

205465025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

205465025 is a deficient number, since it is larger than the sum of its proper divisors (50052475).

205465025 is a wasteful number, since it uses less digits than its factorization.

205465025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23908 (or 23903 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 205465025 is about 14334.0512417111. The cubic root of 205465025 is about 590.0823642555.

The spelling of 205465025 in words is "two hundred five million, four hundred sixty-five thousand, twenty-five".