167196666507025 has 27 divisors (see below), whose sum is σ = 220238219410801. Its totient is φ = 125888427232640.

The previous prime is 167196666506959. The next prime is 167196666507083. The reversal of 167196666507025 is 520705666691761.

The square root of 167196666507025 is 12930455.

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 3910897804801 + 163285768702224 = 1977599^2 + 12778332^2 .

It is not a de Polignac number, because 167196666507025 - 2¹⁷ = 167196666375953 is a prime.

It is a super-2 number, since 2×167196666507025² (a number of 29 digits) contains 22 as substring.

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, 1099012614 + ... + 1099164736.

Almost surely, 2^{167196666507025} is an apocalyptic number.

167196666507025 is the 12930455-th square number.

167196666507025 is the 6465228-th centered octagonal number.

It is an amenable number.

167196666507025 is a deficient number, since it is larger than the sum of its proper divisors (53041552903776).

167196666507025 is an frugal number, since it uses more digits than its factorization.

167196666507025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304290 (or 152145 counting only the distinct ones).

The product of its (nonzero) digits is 171460800, while the sum is 67.

The spelling of 167196666507025 in words is "one hundred sixty-seven trillion, one hundred ninety-six billion, six hundred sixty-six million, five hundred seven thousand, twenty-five".