1252229174879 has 2 divisors, whose sum is σ = 1252229174880. Its totient is φ = 1252229174878.

The previous prime is 1252229174857. The next prime is 1252229174909. The reversal of 1252229174879 is 9784719222521.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1252229174879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1252229174279) 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, 626114587439 + 626114587440.

It is an arithmetic number, because the mean of its divisors is an integer number (626114587440).

Almost surely, 2^{1252229174879} is an apocalyptic number.

1252229174879 is a deficient number, since it is larger than the sum of its proper divisors (1).

1252229174879 is an equidigital number, since it uses as much as digits as its factorization.

1252229174879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10160640, while the sum is 59.

The spelling of 1252229174879 in words is "one trillion, two hundred fifty-two billion, two hundred twenty-nine million, one hundred seventy-four thousand, eight hundred seventy-nine".