1275250051 has 2 divisors, whose sum is σ = 1275250052. Its totient is φ = 1275250050.

The previous prime is 1275250049. The next prime is 1275250057. The reversal of 1275250051 is 1500525721.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1275250051 - 2¹ = 1275250049 is a prime.

Together with 1275250049, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1275250057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 637625025 + 637625026.

It is an arithmetic number, because the mean of its divisors is an integer number (637625026).

Almost surely, 2^1275250051 is an apocalyptic number.

1275250051 is a deficient number, since it is larger than the sum of its proper divisors (1).

1275250051 is an equidigital number, since it uses as much as digits as its factorization.

1275250051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3500, while the sum is 28.

The square root of 1275250051 is about 35710.6433854110. The cubic root of 1275250051 is about 1084.4223250928.

Adding to 1275250051 its reverse (1500525721), we get a palindrome (2775775772).

The spelling of 1275250051 in words is "one billion, two hundred seventy-five million, two hundred fifty thousand, fifty-one".