161148125 has 10 divisors (see below), whose sum is σ = 201371478. Its totient is φ = 128918000.

The previous prime is 161148109. The next prime is 161148173. The reversal of 161148125 is 521841161.

It can be written as a sum of positive squares in 5 ways, for example, as 33051001 + 128097124 = 5749^2 + 11318^2 .

It is not a de Polignac number, because 161148125 - 2⁴ = 161148109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 128294 + ... + 129543.

Almost surely, 2^161148125 is an apocalyptic number.

It is an amenable number.

161148125 is a deficient number, since it is larger than the sum of its proper divisors (40223353).

161148125 is an frugal number, since it uses more digits than its factorization.

161148125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257857 (or 257842 counting only the distinct ones).

The product of its digits is 1920, while the sum is 29.

The square root of 161148125 is about 12694.4131412208. The cubic root of 161148125 is about 544.1789674371.

Adding to 161148125 its reverse (521841161), we get a palindrome (682989286).

The spelling of 161148125 in words is "one hundred sixty-one million, one hundred forty-eight thousand, one hundred twenty-five".