1199265255 has 24 divisors (see below), whose sum is σ = 2201005872. Its totient is φ = 601983744.

The previous prime is 1199265253. The next prime is 1199265281. The reversal of 1199265255 is 5525629911.

1199265255 is a `hidden beast` number, since 11 + 99 + 26 + 525 + 5 = 666.

It is not a de Polignac number, because 1199265255 - 2¹ = 1199265253 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1199265255.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1199265251) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 783069 + ... + 784598.

It is an arithmetic number, because the mean of its divisors is an integer number (91708578).

Almost surely, 2^1199265255 is an apocalyptic number.

1199265255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1199265255 is a deficient number, since it is larger than the sum of its proper divisors (1001740617).

1199265255 is a wasteful number, since it uses less digits than its factorization.

1199265255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1567695 (or 1567692 counting only the distinct ones).

The product of its digits is 243000, while the sum is 45.

The square root of 1199265255 is about 34630.4093969448. The cubic root of 1199265255 is about 1062.4416407162.

The spelling of 1199265255 in words is "one billion, one hundred ninety-nine million, two hundred sixty-five thousand, two hundred fifty-five".