1265807960 has 16 divisors (see below), whose sum is σ = 2848068000. Its totient is φ = 506323168.

The previous prime is 1265807941. The next prime is 1265807969. The reversal of 1265807960 is 697085621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1265807969) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15822560 + ... + 15822639.

It is an arithmetic number, because the mean of its divisors is an integer number (178004250).

Almost surely, 2^1265807960 is an apocalyptic number.

1265807960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1265807960 is an abundant number, since it is smaller than the sum of its proper divisors (1582260040).

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

1265807960 is a wasteful number, since it uses less digits than its factorization.

1265807960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31645210 (or 31645206 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 1265807960 is about 35578.1950076167. The cubic root of 1265807960 is about 1081.7392984747.

The spelling of 1265807960 in words is "one billion, two hundred sixty-five million, eight hundred seven thousand, nine hundred sixty".