1275025247 has 2 divisors, whose sum is σ = 1275025248. Its totient is φ = 1275025246.

The previous prime is 1275025181. The next prime is 1275025249. The reversal of 1275025247 is 7425205721.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1275025247 - 2¹² = 1275021151 is a prime.

It is a super-2 number, since 2×1275025247² = 3251378760974822018, which contains 22 as substring.

Together with 1275025249, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1275025249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 637512623 + 637512624.

It is an arithmetic number, because the mean of its divisors is an integer number (637512624).

Almost surely, 2^1275025247 is an apocalyptic number.

1275025247 is a deficient number, since it is larger than the sum of its proper divisors (1).

1275025247 is an equidigital number, since it uses as much as digits as its factorization.

1275025247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 39200, while the sum is 35.

The square root of 1275025247 is about 35707.4956696770. The cubic root of 1275025247 is about 1084.3585998644.

The spelling of 1275025247 in words is "one billion, two hundred seventy-five million, twenty-five thousand, two hundred forty-seven".