1250781253 has 2 divisors, whose sum is σ = 1250781254. Its totient is φ = 1250781252.

The previous prime is 1250781209. The next prime is 1250781269. The reversal of 1250781253 is 3521870521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1143927684 + 106853569 = 33822^2 + 10337^2 .

It is a cyclic number.

It is not a de Polignac number, because 1250781253 - 2²⁹ = 713910341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1250781853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 625390626 + 625390627.

It is an arithmetic number, because the mean of its divisors is an integer number (625390627).

Almost surely, 2^1250781253 is an apocalyptic number.

It is an amenable number.

1250781253 is a deficient number, since it is larger than the sum of its proper divisors (1).

1250781253 is an equidigital number, since it uses as much as digits as its factorization.

1250781253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16800, while the sum is 34.

The square root of 1250781253 is about 35366.3859194009. The cubic root of 1250781253 is about 1077.4417194196.

The spelling of 1250781253 in words is "one billion, two hundred fifty million, seven hundred eighty-one thousand, two hundred fifty-three".