1205265 has 16 divisors (see below), whose sum is σ = 2030400. Its totient is φ = 608832.

The previous prime is 1205257. The next prime is 1205287. The reversal of 1205265 is 5625021.

It is not a de Polignac number, because 1205265 - 2³ = 1205257 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1830 + ... + 2399.

It is an arithmetic number, because the mean of its divisors is an integer number (126900).

2^1205265 is an apocalyptic number.

1205265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1205265 is a deficient number, since it is larger than the sum of its proper divisors (825135).

1205265 is a wasteful number, since it uses less digits than its factorization.

1205265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4256.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 1205265 is about 1097.8456175620. The cubic root of 1205265 is about 106.4210439937.

The spelling of 1205265 in words is "one million, two hundred five thousand, two hundred sixty-five".