16125530 has 16 divisors (see below), whose sum is σ = 30288384. Its totient is φ = 6169680.

The previous prime is 16125523. The next prime is 16125539. The reversal of 16125530 is 3552161.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a junction number, because it is equal to n+sod(n) for n = 16125496 and 16125505.

It is not an unprimeable number, because it can be changed into a prime (16125539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34826 + ... + 35285.

It is an arithmetic number, because the mean of its divisors is an integer number (1893024).

Almost surely, 2^16125530 is an apocalyptic number.

16125530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16125530 is a deficient number, since it is larger than the sum of its proper divisors (14162854).

16125530 is a wasteful number, since it uses less digits than its factorization.

16125530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70141.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 16125530 is about 4015.6605932275. The cubic root of 16125530 is about 252.6414852582.

Adding to 16125530 its reverse (3552161), we get a palindrome (19677691).

The spelling of 16125530 in words is "sixteen million, one hundred twenty-five thousand, five hundred thirty".