161453325 has 36 divisors (see below), whose sum is σ = 293425664. Its totient is φ = 78276000.

The previous prime is 161453321. The next prime is 161453359. The reversal of 161453325 is 523354161.

It is not a de Polignac number, because 161453325 - 2² = 161453321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 161453292 and 161453301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161453321) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 180 + ... + 17970.

Almost surely, 2^161453325 is an apocalyptic number.

161453325 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

161453325 is a deficient number, since it is larger than the sum of its proper divisors (131972339).

161453325 is a wasteful number, since it uses less digits than its factorization.

161453325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17826 (or 17810 counting only the distinct ones).

The product of its digits is 10800, while the sum is 30.

The square root of 161453325 is about 12706.4284911221. The cubic root of 161453325 is about 544.5222927308.

The spelling of 161453325 in words is "one hundred sixty-one million, four hundred fifty-three thousand, three hundred twenty-five".