1250761273 has 2 divisors, whose sum is σ = 1250761274. Its totient is φ = 1250761272.

The previous prime is 1250761231. The next prime is 1250761301. The reversal of 1250761273 is 3721670521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 817788409 + 432972864 = 28597^2 + 20808^2 .

It is an emirp because it is prime and its reverse (3721670521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1250761273 - 2²⁵ = 1217206841 is a prime.

It is not a weakly prime, because it can be changed into another prime (1250761373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 625380636 + 625380637.

It is an arithmetic number, because the mean of its divisors is an integer number (625380637).

Almost surely, 2^1250761273 is an apocalyptic number.

It is an amenable number.

1250761273 is a deficient number, since it is larger than the sum of its proper divisors (1).

1250761273 is an equidigital number, since it uses as much as digits as its factorization.

1250761273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 1250761273 is about 35366.1034466620. The cubic root of 1250761273 is about 1077.4359823652.

The spelling of 1250761273 in words is "one billion, two hundred fifty million, seven hundred sixty-one thousand, two hundred seventy-three".