1252661356127 has 2 divisors, whose sum is σ = 1252661356128. Its totient is φ = 1252661356126.

The previous prime is 1252661356027. The next prime is 1252661356153. The reversal of 1252661356127 is 7216531662521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1252661356127 - 2⁴⁰ = 153149728351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1252661356027) 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, 626330678063 + 626330678064.

It is an arithmetic number, because the mean of its divisors is an integer number (626330678064).

Almost surely, 2^{1252661356127} is an apocalyptic number.

1252661356127 is a deficient number, since it is larger than the sum of its proper divisors (1).

1252661356127 is an equidigital number, since it uses as much as digits as its factorization.

1252661356127 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 907200, while the sum is 47.

The spelling of 1252661356127 in words is "one trillion, two hundred fifty-two billion, six hundred sixty-one million, three hundred fifty-six thousand, one hundred twenty-seven".