205151265 has 96 divisors (see below), whose sum is σ = 422620800. Its totient is φ = 94089600.

The previous prime is 205151239. The next prime is 205151279. The reversal of 205151265 is 562151502.

205151265 is a `hidden beast` number, since 20 + 515 + 126 + 5 = 666.

It is not a de Polignac number, because 205151265 - 2⁷ = 205151137 is a prime.

It is a super-2 number, since 2×205151265² = 84174083062200450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 310035 + ... + 310695.

It is an arithmetic number, because the mean of its divisors is an integer number (4402300).

Almost surely, 2^205151265 is an apocalyptic number.

It is an amenable number.

205151265 is an abundant number, since it is smaller than the sum of its proper divisors (217469535).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

205151265 is a wasteful number, since it uses less digits than its factorization.

205151265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 716 (or 699 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The square root of 205151265 is about 14323.1024921279. The cubic root of 205151265 is about 589.7818450381.

The spelling of 205151265 in words is "two hundred five million, one hundred fifty-one thousand, two hundred sixty-five".