161325207 has 24 divisors (see below), whose sum is σ = 240240000. Its totient is φ = 104258448.

The previous prime is 161325187. The next prime is 161325221. The reversal of 161325207 is 702523161.

It is a happy number.

161325207 is a `hidden beast` number, since 1 + 6 + 132 + 520 + 7 = 666.

161325207 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 161325207 - 2¹⁰ = 161324183 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161325247) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52294 + ... + 55292.

It is an arithmetic number, because the mean of its divisors is an integer number (10010000).

Almost surely, 2^161325207 is an apocalyptic number.

161325207 is a deficient number, since it is larger than the sum of its proper divisors (78914793).

161325207 is a wasteful number, since it uses less digits than its factorization.

161325207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3187 (or 3184 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 161325207 is about 12701.3860267295. The cubic root of 161325207 is about 544.3782230886.

Adding to 161325207 its reverse (702523161), we get a palindrome (863848368).

The spelling of 161325207 in words is "one hundred sixty-one million, three hundred twenty-five thousand, two hundred seven".