161560325 has 12 divisors (see below), whose sum is σ = 210879360. Its totient is φ = 122445360.

The previous prime is 161560297. The next prime is 161560327. The reversal of 161560325 is 523065161.

It is not a de Polignac number, because 161560325 - 2¹⁰ = 161559301 is a prime.

It is a super-2 number, since 2×161560325² = 52203477228211250, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161560327) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 169589 + ... + 170538.

It is an arithmetic number, because the mean of its divisors is an integer number (17573280).

Almost surely, 2^161560325 is an apocalyptic number.

It is an amenable number.

161560325 is a deficient number, since it is larger than the sum of its proper divisors (49319035).

161560325 is a wasteful number, since it uses less digits than its factorization.

161560325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340156 (or 340151 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 161560325 is about 12710.6382609214. The cubic root of 161560325 is about 544.6425566295.

The spelling of 161560325 in words is "one hundred sixty-one million, five hundred sixty thousand, three hundred twenty-five".