1275286656 has 64 divisors (see below), whose sum is σ = 3871414080. Its totient is φ = 364366848.

The previous prime is 1275286619. The next prime is 1275286709. The reversal of 1275286656 is 6566825721.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 234531 + ... + 239906.

It is an arithmetic number, because the mean of its divisors is an integer number (60490845).

Almost surely, 2^1275286656 is an apocalyptic number.

1275286656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1275286656 is an abundant number, since it is smaller than the sum of its proper divisors (2596127424).

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

1275286656 is an equidigital number, since it uses as much as digits as its factorization.

1275286656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474461 (or 474449 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 48.

The square root of 1275286656 is about 35711.1559040029. The cubic root of 1275286656 is about 1084.4327008095.

The spelling of 1275286656 in words is "one billion, two hundred seventy-five million, two hundred eighty-six thousand, six hundred fifty-six".