1252412999989 has 2 divisors, whose sum is σ = 1252412999990. Its totient is φ = 1252412999988.

The previous prime is 1252412999983. The next prime is 1252413000043. The reversal of 1252412999989 is 9899992142521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1222771524100 + 29641475889 = 1105790^2 + 172167^2 .

It is a cyclic number.

It is not a de Polignac number, because 1252412999989 - 2²¹ = 1252410902837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1252412999983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626206499994 + 626206499995.

It is an arithmetic number, because the mean of its divisors is an integer number (626206499995).

Almost surely, 2^{1252412999989} is an apocalyptic number.

It is an amenable number.

1252412999989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1252412999989 is an equidigital number, since it uses as much as digits as its factorization.

1252412999989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 75582720, while the sum is 70.

The spelling of 1252412999989 in words is "one trillion, two hundred fifty-two billion, four hundred twelve million, nine hundred ninety-nine thousand, nine hundred eighty-nine".