251265152773 has 2 divisors, whose sum is σ = 251265152774. Its totient is φ = 251265152772.

The previous prime is 251265152759. The next prime is 251265152837. The reversal of 251265152773 is 377251562152.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 245958467364 + 5306685409 = 495942^2 + 72847^2 .

It is a cyclic number.

It is not a de Polignac number, because 251265152773 - 2²⁹ = 250728281861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (251265155773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125632576386 + 125632576387.

It is an arithmetic number, because the mean of its divisors is an integer number (125632576387).

Almost surely, 2^251265152773 is an apocalyptic number.

It is an amenable number.

251265152773 is a deficient number, since it is larger than the sum of its proper divisors (1).

251265152773 is an equidigital number, since it uses as much as digits as its factorization.

251265152773 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 882000, while the sum is 46.

The spelling of 251265152773 in words is "two hundred fifty-one billion, two hundred sixty-five million, one hundred fifty-two thousand, seven hundred seventy-three".