1251345463 has 2 divisors, whose sum is σ = 1251345464. Its totient is φ = 1251345462.

The previous prime is 1251345413. The next prime is 1251345497. The reversal of 1251345463 is 3645431521.

It is an a-pointer prime, because the next prime (1251345497) can be obtained adding 1251345463 to its sum of digits (34).

It is a strong prime.

It is an emirp because it is prime and its reverse (3645431521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1251345463 - 2²⁵ = 1217791031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1251345413) 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, 625672731 + 625672732.

It is an arithmetic number, because the mean of its divisors is an integer number (625672732).

Almost surely, 2^1251345463 is an apocalyptic number.

1251345463 is a deficient number, since it is larger than the sum of its proper divisors (1).

1251345463 is an equidigital number, since it uses as much as digits as its factorization.

1251345463 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43200, while the sum is 34.

The square root of 1251345463 is about 35374.3616620852. The cubic root of 1251345463 is about 1077.6037013831.

Adding to 1251345463 its reverse (3645431521), we get a palindrome (4896776984).

The spelling of 1251345463 in words is "one billion, two hundred fifty-one million, three hundred forty-five thousand, four hundred sixty-three".