165628325 has 12 divisors (see below), whose sum is σ = 205620768. Its totient is φ = 132346800.

The previous prime is 165628321. The next prime is 165628361. The reversal of 165628325 is 523826561.

It is not a de Polignac number, because 165628325 - 2² = 165628321 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165628321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20864 + ... + 27686.

It is an arithmetic number, because the mean of its divisors is an integer number (17135064).

Almost surely, 2^165628325 is an apocalyptic number.

It is an amenable number.

165628325 is a deficient number, since it is larger than the sum of its proper divisors (39992443).

165628325 is an equidigital number, since it uses as much as digits as its factorization.

165628325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7804 (or 7799 counting only the distinct ones).

The product of its digits is 86400, while the sum is 38.

The square root of 165628325 is about 12869.6668566051. Note that the first 3 decimals coincide. The cubic root of 165628325 is about 549.1759836967.

The spelling of 165628325 in words is "one hundred sixty-five million, six hundred twenty-eight thousand, three hundred twenty-five".