168775955225 has 12 divisors (see below), whose sum is σ = 216498812460. Its totient is φ = 130364875200.

The previous prime is 168775955219. The next prime is 168775955261. The reversal of 168775955225 is 522559577861.

It can be written as a sum of positive squares in 6 ways, for example, as 2592540889 + 166183414336 = 50917^2 + 407656^2 .

It is not a de Polignac number, because 168775955225 - 2¹⁴ = 168775938841 is a prime.

It is a super-2 number, since 2×168775955225² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 116396486 + ... + 116397935.

It is an arithmetic number, because the mean of its divisors is an integer number (18041567705).

Almost surely, 2^168775955225 is an apocalyptic number.

It is an amenable number.

168775955225 is a deficient number, since it is larger than the sum of its proper divisors (47722857235).

168775955225 is a wasteful number, since it uses less digits than its factorization.

168775955225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232794460 (or 232794455 counting only the distinct ones).

The product of its digits is 52920000, while the sum is 62.

The spelling of 168775955225 in words is "one hundred sixty-eight billion, seven hundred seventy-five million, nine hundred fifty-five thousand, two hundred twenty-five".