1251453706427 has 2 divisors, whose sum is σ = 1251453706428. Its totient is φ = 1251453706426.

The previous prime is 1251453706387. The next prime is 1251453706501. The reversal of 1251453706427 is 7246073541521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1251453706427 - 2⁸ = 1251453706171 is a prime.

It is a super-2 number, since 2×1251453706427² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1251453706627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 625726853213 + 625726853214.

It is an arithmetic number, because the mean of its divisors is an integer number (625726853214).

Almost surely, 2^{1251453706427} is an apocalyptic number.

1251453706427 is a deficient number, since it is larger than the sum of its proper divisors (1).

1251453706427 is an equidigital number, since it uses as much as digits as its factorization.

1251453706427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1411200, while the sum is 47.

The spelling of 1251453706427 in words is "one trillion, two hundred fifty-one billion, four hundred fifty-three million, seven hundred six thousand, four hundred twenty-seven".