167391448225 has 27 divisors (see below), whose sum is σ = 212197526841. Its totient is φ = 130988661600.

The previous prime is 167391448223. The next prime is 167391448229. The reversal of 167391448225 is 522844193761.

The square root of 167391448225 is 409135.

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

It can be written as a sum of positive squares in 4 ways, for example, as 101634077601 + 65757370624 = 318801^2 + 256432^2 .

It is not a de Polignac number, because 167391448225 - 2¹ = 167391448223 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (167391448223) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 96145855 + ... + 96147595.

Almost surely, 2^167391448225 is an apocalyptic number.

167391448225 is the 409135-th square number.

167391448225 is the 204568-th centered octagonal number.

It is an amenable number.

167391448225 is a deficient number, since it is larger than the sum of its proper divisors (44806078616).

167391448225 is an frugal number, since it uses more digits than its factorization.

167391448225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3586 (or 1793 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 52.

The spelling of 167391448225 in words is "one hundred sixty-seven billion, three hundred ninety-one million, four hundred forty-eight thousand, two hundred twenty-five".