1251502433273 has 2 divisors, whose sum is σ = 1251502433274. Its totient is φ = 1251502433272.

The previous prime is 1251502433201. The next prime is 1251502433323. The reversal of 1251502433273 is 3723342051521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 809213590969 + 442288842304 = 899563^2 + 665048^2 .

It is a cyclic number.

It is not a de Polignac number, because 1251502433273 - 2¹⁶ = 1251502367737 is a prime.

It is not a weakly prime, because it can be changed into another prime (1251502433473) 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, 625751216636 + 625751216637.

It is an arithmetic number, because the mean of its divisors is an integer number (625751216637).

Almost surely, 2^{1251502433273} is an apocalyptic number.

It is an amenable number.

1251502433273 is a deficient number, since it is larger than the sum of its proper divisors (1).

1251502433273 is an equidigital number, since it uses as much as digits as its factorization.

1251502433273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 151200, while the sum is 38.

Adding to 1251502433273 its reverse (3723342051521), we get a palindrome (4974844484794).

The spelling of 1251502433273 in words is "one trillion, two hundred fifty-one billion, five hundred two million, four hundred thirty-three thousand, two hundred seventy-three".