1275855360 has 240 divisors, whose sum is σ = 4421127744. Its totient is φ = 313737216.

The previous prime is 1275855359. The next prime is 1275855397. The reversal of 1275855360 is 635585721.

It is a tau number, because it is divible by the number of its divisors (240).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1297429 + ... + 1298411.

Almost surely, 2^1275855360 is an apocalyptic number.

1275855360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1275855360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2210563872).

1275855360 is an abundant number, since it is smaller than the sum of its proper divisors (3145272384).

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

1275855360 is an equidigital number, since it uses as much as digits as its factorization.

1275855360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1035 (or 1006 counting only the distinct ones).

The product of its (nonzero) digits is 252000, while the sum is 42.

The square root of 1275855360 is about 35719.1175702872. The cubic root of 1275855360 is about 1084.5938749163.

The spelling of 1275855360 in words is "one billion, two hundred seventy-five million, eight hundred fifty-five thousand, three hundred sixty".