16525138 has 16 divisors (see below), whose sum is σ = 28520064. Its totient is φ = 7034400.

The previous prime is 16525097. The next prime is 16525147. The reversal of 16525138 is 83152561.

It is an unprimeable number.

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, 1795 + ... + 6022.

It is an arithmetic number, because the mean of its divisors is an integer number (1782504).

Almost surely, 2^16525138 is an apocalyptic number.

16525138 is a deficient number, since it is larger than the sum of its proper divisors (11994926).

16525138 is a wasteful number, since it uses less digits than its factorization.

16525138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7977.

The product of its digits is 7200, while the sum is 31.

The square root of 16525138 is about 4065.1122985718. The cubic root of 16525138 is about 254.7113894788.

Adding to 16525138 its reverse (83152561), we get a palindrome (99677699).

The spelling of 16525138 in words is "sixteen million, five hundred twenty-five thousand, one hundred thirty-eight".