1275251275 has 6 divisors (see below), whose sum is σ = 1581311612. Its totient is φ = 1020201000.

The previous prime is 1275251227. The next prime is 1275251279. The reversal of 1275251275 is 5721525721.

It is a de Polignac number, because none of the positive numbers 2^k-1275251275 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1275251279) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 25505001 + ... + 25505050.

Almost surely, 2^1275251275 is an apocalyptic number.

1275251275 is a deficient number, since it is larger than the sum of its proper divisors (306060337).

1275251275 is an equidigital number, since it uses as much as digits as its factorization.

1275251275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51010061 (or 51010056 counting only the distinct ones).

The product of its digits is 49000, while the sum is 37.

The square root of 1275251275 is about 35710.6605231547. The cubic root of 1275251275 is about 1084.4226720398.

Adding to 1275251275 its reverse (5721525721), we get a palindrome (6996776996).

The spelling of 1275251275 in words is "one billion, two hundred seventy-five million, two hundred fifty-one thousand, two hundred seventy-five".