165674225 has 12 divisors (see below), whose sum is σ = 207913776. Its totient is φ = 130940880.

The previous prime is 165674219. The next prime is 165674287. The reversal of 165674225 is 522476561.

It is not a de Polignac number, because 165674225 - 2²⁶ = 98565361 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37847 + ... + 41996.

It is an arithmetic number, because the mean of its divisors is an integer number (17326148).

Almost surely, 2^165674225 is an apocalyptic number.

It is an amenable number.

165674225 is a deficient number, since it is larger than the sum of its proper divisors (42239551).

165674225 is an equidigital number, since it uses as much as digits as its factorization.

165674225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79936 (or 79931 counting only the distinct ones).

The product of its digits is 100800, while the sum is 38.

The square root of 165674225 is about 12871.4499960183. The cubic root of 165674225 is about 549.2267094195.

The spelling of 165674225 in words is "one hundred sixty-five million, six hundred seventy-four thousand, two hundred twenty-five".