163772422625 has 32 divisors (see below), whose sum is σ = 241121347584. Its totient is φ = 108678456000.

The previous prime is 163772422621. The next prime is 163772422669. The reversal of 163772422625 is 526224277361.

It is not a de Polignac number, because 163772422625 - 2² = 163772422621 is a prime.

It is a super-2 number, since 2×163772422625² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 163772422625.

It is not an unprimeable number, because it can be changed into a prime (163772422621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2991722 + ... + 3045971.

It is an arithmetic number, because the mean of its divisors is an integer number (7535042112).

Almost surely, 2^163772422625 is an apocalyptic number.

It is an amenable number.

163772422625 is a deficient number, since it is larger than the sum of its proper divisors (77348924959).

163772422625 is an equidigital number, since it uses as much as digits as its factorization.

163772422625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6037746 (or 6037736 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 47.

Adding to 163772422625 its reverse (526224277361), we get a palindrome (689996699986).

The spelling of 163772422625 in words is "one hundred sixty-three billion, seven hundred seventy-two million, four hundred twenty-two thousand, six hundred twenty-five".