1248845325209 has 4 divisors (see below), whose sum is σ = 1282597901604. Its totient is φ = 1215092748816.

The previous prime is 1248845325199. The next prime is 1248845325229. The reversal of 1248845325209 is 9025235488421.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 687484747609 + 561360577600 = 829147^2 + 749240^2 .

It is a cyclic number.

It is not a de Polignac number, because 1248845325209 - 2⁴ = 1248845325193 is a prime.

It is a super-2 number, since 2×1248845325209² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1248845325229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16876288142 + ... + 16876288215.

It is an arithmetic number, because the mean of its divisors is an integer number (320649475401).

Almost surely, 2^{1248845325209} is an apocalyptic number.

It is an amenable number.

1248845325209 is a deficient number, since it is larger than the sum of its proper divisors (33752576395).

1248845325209 is an equidigital number, since it uses as much as digits as its factorization.

1248845325209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33752576394.

The product of its (nonzero) digits is 5529600, while the sum is 53.

The spelling of 1248845325209 in words is "one trillion, two hundred forty-eight billion, eight hundred forty-five million, three hundred twenty-five thousand, two hundred nine".