1245305297 has 2 divisors, whose sum is σ = 1245305298. Its totient is φ = 1245305296.

The previous prime is 1245305183. The next prime is 1245305387. The reversal of 1245305297 is 7925035421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 731648401 + 513656896 = 27049^2 + 22664^2 .

It is a cyclic number.

It is not a de Polignac number, because 1245305297 - 2²⁰ = 1244256721 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1245305297.

It is not a weakly prime, because it can be changed into another prime (1245305597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 622652648 + 622652649.

It is an arithmetic number, because the mean of its divisors is an integer number (622652649).

Almost surely, 2^1245305297 is an apocalyptic number.

It is an amenable number.

1245305297 is a deficient number, since it is larger than the sum of its proper divisors (1).

1245305297 is an equidigital number, since it uses as much as digits as its factorization.

1245305297 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75600, while the sum is 38.

The square root of 1245305297 is about 35288.8834762450. The cubic root of 1245305297 is about 1075.8670623551.

The spelling of 1245305297 in words is "one billion, two hundred forty-five million, three hundred five thousand, two hundred ninety-seven".