165925741 has 2 divisors, whose sum is σ = 165925742. Its totient is φ = 165925740.

The previous prime is 165925717. The next prime is 165925751. The reversal of 165925741 is 147529561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 148108900 + 17816841 = 12170^2 + 4221^2 .

It is an emirp because it is prime and its reverse (147529561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 165925741 - 2⁵ = 165925709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 165925694 and 165925703.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165925751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82962870 + 82962871.

It is an arithmetic number, because the mean of its divisors is an integer number (82962871).

Almost surely, 2^165925741 is an apocalyptic number.

It is an amenable number.

165925741 is a deficient number, since it is larger than the sum of its proper divisors (1).

165925741 is an equidigital number, since it uses as much as digits as its factorization.

165925741 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 75600, while the sum is 40.

The square root of 165925741 is about 12881.2165962692. The cubic root of 165925741 is about 549.5045024984.

The spelling of 165925741 in words is "one hundred sixty-five million, nine hundred twenty-five thousand, seven hundred forty-one".