169147125625 has 15 divisors (see below), whose sum is σ = 211379097193. Its totient is φ = 135309475000.

The previous prime is 169147125577. The next prime is 169147125659. The reversal of 169147125625 is 526521741961.

The square root of 169147125625 is 411275.

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

It can be written as a sum of positive squares in 2 ways, for example, as 13261134649 + 155885990976 = 115157^2 + 394824^2 .

It is not a de Polignac number, because 169147125625 - 2¹¹ = 169147123577 is a prime.

It is a super-2 number, since 2×169147125625² (a number of 23 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 14 ways as a sum of consecutive naturals, for example, 10273650 + ... + 10290100.

Almost surely, 2^169147125625 is an apocalyptic number.

169147125625 is the 411275-th square number.

169147125625 is the 205638-th centered octagonal number.

It is an amenable number.

169147125625 is a deficient number, since it is larger than the sum of its proper divisors (42231971568).

169147125625 is an frugal number, since it uses more digits than its factorization.

169147125625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32922 (or 16456 counting only the distinct ones).

The product of its digits is 907200, while the sum is 49.

Multiplying 169147125625 by its sum of digits (49), we get a square (8288209155625 = 2878925²).

The spelling of 169147125625 in words is "one hundred sixty-nine billion, one hundred forty-seven million, one hundred twenty-five thousand, six hundred twenty-five".