1265518752 has 24 divisors (see below), whose sum is σ = 3321986976. Its totient is φ = 421839552.

The previous prime is 1265518739. The next prime is 1265518817. The reversal of 1265518752 is 2578155621.

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6591148 + ... + 6591339.

It is an arithmetic number, because the mean of its divisors is an integer number (138416124).

Almost surely, 2^1265518752 is an apocalyptic number.

1265518752 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1265518752 is an abundant number, since it is smaller than the sum of its proper divisors (2056468224).

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

1265518752 is a wasteful number, since it uses less digits than its factorization.

1265518752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13182500 (or 13182492 counting only the distinct ones).

The product of its digits is 168000, while the sum is 42.

The square root of 1265518752 is about 35574.1303758785. The cubic root of 1265518752 is about 1081.6569080179.

The spelling of 1265518752 in words is "one billion, two hundred sixty-five million, five hundred eighteen thousand, seven hundred fifty-two".