16520125 has 16 divisors (see below), whose sum is σ = 20734272. Its totient is φ = 13141200.

The previous prime is 16520099. The next prime is 16520137. The reversal of 16520125 is 52102561.

It is not a de Polignac number, because 16520125 - 2¹¹ = 16518077 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16520096 and 16520105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35142 + ... + 35608.

It is an arithmetic number, because the mean of its divisors is an integer number (1295892).

Almost surely, 2^16520125 is an apocalyptic number.

It is an amenable number.

16520125 is a deficient number, since it is larger than the sum of its proper divisors (4214147).

16520125 is an equidigital number, since it uses as much as digits as its factorization.

16520125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 765 (or 755 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 16520125 is about 4064.4956636710. The cubic root of 16520125 is about 254.6856307966.

Adding to 16520125 its reverse (52102561), we get a palindrome (68622686).

The spelling of 16520125 in words is "sixteen million, five hundred twenty thousand, one hundred twenty-five".