16516125 has 48 divisors (see below), whose sum is σ = 30444336. Its totient is φ = 8611200.

The previous prime is 16516121. The next prime is 16516127. The reversal of 16516125 is 52161561.

It is a happy number.

16516125 is a `hidden beast` number, since 1 + 651 + 6 + 1 + 2 + 5 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 6365529 + 10150596 = 2523^2 + 3186^2 .

It is not a de Polignac number, because 16516125 - 2² = 16516121 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16516121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 59487 + ... + 59763.

It is an arithmetic number, because the mean of its divisors is an integer number (634257).

Almost surely, 2^16516125 is an apocalyptic number.

16516125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16516125 is a deficient number, since it is larger than the sum of its proper divisors (13928211).

16516125 is a wasteful number, since it uses less digits than its factorization.

16516125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351 (or 338 counting only the distinct ones).

The product of its digits is 1800, while the sum is 27.

The square root of 16516125 is about 4064.0035679118. The cubic root of 16516125 is about 254.6650735519.

Adding to 16516125 its reverse (52161561), we get a palindrome (68677686).

It can be divided in two parts, 16516 and 125, that added together give a square (16641 = 129²).

The spelling of 16516125 in words is "sixteen million, five hundred sixteen thousand, one hundred twenty-five".