1275836745 has 8 divisors (see below), whose sum is σ = 2041338816. Its totient is φ = 680446256.

The previous prime is 1275836707. The next prime is 1275836797. The reversal of 1275836745 is 5476385721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1275836745 - 2¹³ = 1275828553 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1275836694 and 1275836703.

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, 42527877 + ... + 42527906.

It is an arithmetic number, because the mean of its divisors is an integer number (255167352).

Almost surely, 2^1275836745 is an apocalyptic number.

1275836745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1275836745 is a deficient number, since it is larger than the sum of its proper divisors (765502071).

1275836745 is an equidigital number, since it uses as much as digits as its factorization.

1275836745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85055791.

The product of its digits is 1411200, while the sum is 48.

The square root of 1275836745 is about 35718.8569945904. The cubic root of 1275836745 is about 1084.5886000725.

The spelling of 1275836745 in words is "one billion, two hundred seventy-five million, eight hundred thirty-six thousand, seven hundred forty-five".