1275985712 has 10 divisors (see below), whose sum is σ = 2472222348. Its totient is φ = 637992848.

The previous prime is 1275985709. The next prime is 1275985729. The reversal of 1275985712 is 2175895721.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39874538 + ... + 39874569.

Almost surely, 2^1275985712 is an apocalyptic number.

It is an amenable number.

1275985712 is a deficient number, since it is larger than the sum of its proper divisors (1196236636).

1275985712 is an equidigital number, since it uses as much as digits as its factorization.

1275985712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79749115 (or 79749109 counting only the distinct ones).

The product of its digits is 352800, while the sum is 47.

The square root of 1275985712 is about 35720.9422048187. The cubic root of 1275985712 is about 1084.6308107035.

The spelling of 1275985712 in words is "one billion, two hundred seventy-five million, nine hundred eighty-five thousand, seven hundred twelve".