1265268312 has 96 divisors (see below), whose sum is σ = 4272353280. Its totient is φ = 328639680.

The previous prime is 1265268293. The next prime is 1265268313. The reversal of 1265268312 is 2138625621.

1265268312 is a `hidden beast` number, since 126 + 526 + 8 + 3 + 1 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1265268313) 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, 108568 + ... + 119655.

It is an arithmetic number, because the mean of its divisors is an integer number (44503680).

Almost surely, 2^1265268312 is an apocalyptic number.

1265268312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1265268312 is an abundant number, since it is smaller than the sum of its proper divisors (3007084968).

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

1265268312 is a wasteful number, since it uses less digits than its factorization.

1265268312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228253 (or 228246 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 1265268312 is about 35570.6102281083. The cubic root of 1265268312 is about 1081.5855517652.

The spelling of 1265268312 in words is "one billion, two hundred sixty-five million, two hundred sixty-eight thousand, three hundred twelve".