11945372825 has 6 divisors (see below), whose sum is σ = 14812262334. Its totient is φ = 9556298240.

The previous prime is 11945372819. The next prime is 11945372863. The reversal of 11945372825 is 52827354911.

It can be written as a sum of positive squares in 3 ways, for example, as 79192201 + 11866180624 = 8899^2 + 108932^2 .

It is a de Polignac number, because none of the positive numbers 2^k-11945372825 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11945372825.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 238907432 + ... + 238907481.

It is an arithmetic number, because the mean of its divisors is an integer number (2468710389).

Almost surely, 2^11945372825 is an apocalyptic number.

It is an amenable number.

11945372825 is a deficient number, since it is larger than the sum of its proper divisors (2866889509).

11945372825 is an equidigital number, since it uses as much as digits as its factorization.

11945372825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477814923 (or 477814918 counting only the distinct ones).

The product of its digits is 604800, while the sum is 47.

The spelling of 11945372825 in words is "eleven billion, nine hundred forty-five million, three hundred seventy-two thousand, eight hundred twenty-five".