165168625 has 8 divisors (see below), whose sum is σ = 206130600. Its totient is φ = 132134800.

The previous prime is 165168613. The next prime is 165168631. The reversal of 165168625 is 526861561.

165168625 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 71824 + 165096801 = 268^2 + 12849^2 .

It is not a de Polignac number, because 165168625 - 2¹⁵ = 165135857 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 660550 + ... + 660799.

It is an arithmetic number, because the mean of its divisors is an integer number (25766325).

Almost surely, 2^165168625 is an apocalyptic number.

It is an amenable number.

165168625 is a deficient number, since it is larger than the sum of its proper divisors (40961975).

165168625 is an equidigital number, since it uses as much as digits as its factorization.

165168625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1321364 (or 1321354 counting only the distinct ones).

The product of its digits is 86400, while the sum is 40.

The square root of 165168625 is about 12851.7946217639. The cubic root of 165168625 is about 548.6674351662.

The spelling of 165168625 in words is "one hundred sixty-five million, one hundred sixty-eight thousand, six hundred twenty-five".