1205153265 has 16 divisors (see below), whose sum is σ = 1932969600. Its totient is φ = 641173632.

The previous prime is 1205153263. The next prime is 1205153291. The reversal of 1205153265 is 5623515021.

It is a happy number.

It is not a de Polignac number, because 1205153265 - 2¹ = 1205153263 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1205153263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92085 + ... + 104354.

It is an arithmetic number, because the mean of its divisors is an integer number (120810600).

Almost surely, 2^1205153265 is an apocalyptic number.

1205153265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1205153265 is a deficient number, since it is larger than the sum of its proper divisors (727816335).

1205153265 is a wasteful number, since it uses less digits than its factorization.

1205153265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196856.

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 1205153265 is about 34715.3174405766. The cubic root of 1205153265 is about 1064.1775527772.

Adding to 1205153265 its reverse (5623515021), we get a palindrome (6828668286).

The spelling of 1205153265 in words is "one billion, two hundred five million, one hundred fifty-three thousand, two hundred sixty-five".