16138825 has 12 divisors (see below), whose sum is σ = 20078080. Its totient is φ = 12868560.

The previous prime is 16138823. The next prime is 16138841. The reversal of 16138825 is 52883161.

It is not a de Polignac number, because 16138825 - 2¹ = 16138823 is a prime.

It is a nialpdrome in base 8.

It is not an unprimeable number, because it can be changed into a prime (16138823) 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 11 ways as a sum of consecutive naturals, for example, 8296 + ... + 10054.

Almost surely, 2^16138825 is an apocalyptic number.

It is an amenable number.

16138825 is a deficient number, since it is larger than the sum of its proper divisors (3939255).

16138825 is a wasteful number, since it uses less digits than its factorization.

16138825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2136 (or 2131 counting only the distinct ones).

The product of its digits is 11520, while the sum is 34.

The square root of 16138825 is about 4017.3156460502. The cubic root of 16138825 is about 252.7108978785.

The spelling of 16138825 in words is "sixteen million, one hundred thirty-eight thousand, eight hundred twenty-five".