1252418226019 has 2 divisors, whose sum is σ = 1252418226020. Its totient is φ = 1252418226018.

The previous prime is 1252418225969. The next prime is 1252418226043. The reversal of 1252418226019 is 9106228142521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1252418226019 - 2³³ = 1243828291427 is a prime.

It is a super-2 number, since 2×1252418226019² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1252418226089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626209113009 + 626209113010.

It is an arithmetic number, because the mean of its divisors is an integer number (626209113010).

Almost surely, 2^{1252418226019} is an apocalyptic number.

1252418226019 is a deficient number, since it is larger than the sum of its proper divisors (1).

1252418226019 is an equidigital number, since it uses as much as digits as its factorization.

1252418226019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 138240, while the sum is 43.

The spelling of 1252418226019 in words is "one trillion, two hundred fifty-two billion, four hundred eighteen million, two hundred twenty-six thousand, nineteen".