163511053225 has 27 divisors (see below), whose sum is σ = 219585168399. Its totient is φ = 120727214400.

The previous prime is 163511053171. The next prime is 163511053261. The reversal of 163511053225 is 522350115361.

The square root of 163511053225 is 404365.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 13 ways, for example, as 145842263449 + 17668789776 = 381893^2 + 132924^2 .

It is not a de Polignac number, because 163511053225 - 2³³ = 154921118633 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 26280615 + ... + 26286835.

Almost surely, 2^163511053225 is an apocalyptic number.

163511053225 is the 404365-th square number.

163511053225 is the 202183-rd centered octagonal number.

It is an amenable number.

163511053225 is a deficient number, since it is larger than the sum of its proper divisors (56074115174).

163511053225 is an frugal number, since it uses more digits than its factorization.

163511053225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12478 (or 6239 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 34.

Adding to 163511053225 its reverse (522350115361), we get a palindrome (685861168586).

The spelling of 163511053225 in words is "one hundred sixty-three billion, five hundred eleven million, fifty-three thousand, two hundred twenty-five".