161725332 has 24 divisors (see below), whose sum is σ = 378012096. Its totient is φ = 53815168.

The previous prime is 161725331. The next prime is 161725363. The reversal of 161725332 is 233527161.

It is a self number, because there is not a number n which added to its sum of digits gives 161725332.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161725331) 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, 4248 + ... + 18479.

It is an arithmetic number, because the mean of its divisors is an integer number (15750504).

Almost surely, 2^161725332 is an apocalyptic number.

161725332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

161725332 is an abundant number, since it is smaller than the sum of its proper divisors (216286764).

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

161725332 is a wasteful number, since it uses less digits than its factorization.

161725332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23327 (or 23325 counting only the distinct ones).

The product of its digits is 7560, while the sum is 30.

The square root of 161725332 is about 12717.1275058482. The cubic root of 161725332 is about 544.8279141340.

The spelling of 161725332 in words is "one hundred sixty-one million, seven hundred twenty-five thousand, three hundred thirty-two".