165925740 has 24 divisors (see below), whose sum is σ = 464592240. Its totient is φ = 44246848.

The previous prime is 165925717. The next prime is 165925741. The reversal of 165925740 is 47529561.

It is not an unprimeable number, because it can be changed into a prime (165925741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1382655 + ... + 1382774.

It is an arithmetic number, because the mean of its divisors is an integer number (19358010).

Almost surely, 2^165925740 is an apocalyptic number.

165925740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165925740 is an abundant number, since it is smaller than the sum of its proper divisors (298666500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165925740 is a wasteful number, since it uses less digits than its factorization.

165925740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2765441 (or 2765439 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 39.

The square root of 165925740 is about 12881.2165574529. The cubic root of 165925740 is about 549.5045013945.

The spelling of 165925740 in words is "one hundred sixty-five million, nine hundred twenty-five thousand, seven hundred forty".