1265755012 has 24 divisors (see below), whose sum is σ = 2235784320. Its totient is φ = 626976480.

The previous prime is 1265754991. The next prime is 1265755031. The reversal of 1265755012 is 2105575621.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 369813 + ... + 373219.

It is an arithmetic number, because the mean of its divisors is an integer number (93157680).

Almost surely, 2^1265755012 is an apocalyptic number.

It is an amenable number.

1265755012 is a deficient number, since it is larger than the sum of its proper divisors (970029308).

1265755012 is a wasteful number, since it uses less digits than its factorization.

1265755012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4251 (or 4249 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 34.

The square root of 1265755012 is about 35577.4508923841. The cubic root of 1265755012 is about 1081.7242154255.

The spelling of 1265755012 in words is "one billion, two hundred sixty-five million, seven hundred fifty-five thousand, twelve".