161766325 has 24 divisors (see below), whose sum is σ = 232167680. Its totient is φ = 109512000.

The previous prime is 161766317. The next prime is 161766343. The reversal of 161766325 is 523667161.

It is not a de Polignac number, because 161766325 - 2³ = 161766317 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7975 + ... + 19675.

Almost surely, 2^161766325 is an apocalyptic number.

It is an amenable number.

161766325 is a deficient number, since it is larger than the sum of its proper divisors (70401355).

161766325 is a wasteful number, since it uses less digits than its factorization.

161766325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11797 (or 11792 counting only the distinct ones).

The product of its digits is 45360, while the sum is 37.

The square root of 161766325 is about 12718.7391277595. The cubic root of 161766325 is about 544.8739432948.

The spelling of 161766325 in words is "one hundred sixty-one million, seven hundred sixty-six thousand, three hundred twenty-five".