165925957 has 2 divisors, whose sum is σ = 165925958. Its totient is φ = 165925956.

The previous prime is 165925951. The next prime is 165925973. The reversal of 165925957 is 759529561.

165925957 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 155775361 + 10150596 = 12481^2 + 3186^2 .

It is a cyclic number.

It is not a de Polignac number, because 165925957 - 2²³ = 157537349 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 165925957.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165925951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82962978 + 82962979.

It is an arithmetic number, because the mean of its divisors is an integer number (82962979).

Almost surely, 2^165925957 is an apocalyptic number.

It is an amenable number.

165925957 is a deficient number, since it is larger than the sum of its proper divisors (1).

165925957 is an equidigital number, since it uses as much as digits as its factorization.

165925957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 850500, while the sum is 49.

The square root of 165925957 is about 12881.2249805676. The cubic root of 165925957 is about 549.5047409443.

The spelling of 165925957 in words is "one hundred sixty-five million, nine hundred twenty-five thousand, nine hundred fifty-seven".