16424525 has 24 divisors (see below), whose sum is σ = 22201704. Its totient is φ = 11980800.

The previous prime is 16424521. The next prime is 16424537. The reversal of 16424525 is 52542461.

It can be written as a sum of positive squares in 12 ways, for example, as 9523396 + 6901129 = 3086^2 + 2627^2 .

It is not a de Polignac number, because 16424525 - 2² = 16424521 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16424521) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31265 + ... + 31785.

It is an arithmetic number, because the mean of its divisors is an integer number (925071).

Almost surely, 2^16424525 is an apocalyptic number.

It is an amenable number.

16424525 is a deficient number, since it is larger than the sum of its proper divisors (5777179).

16424525 is a wasteful number, since it uses less digits than its factorization.

16424525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641 (or 636 counting only the distinct ones).

The product of its digits is 9600, while the sum is 29.

The square root of 16424525 is about 4052.7182236124. The cubic root of 16424525 is about 254.1934015892.

Adding to 16424525 its reverse (52542461), we get a palindrome (68966986).

The spelling of 16424525 in words is "sixteen million, four hundred twenty-four thousand, five hundred twenty-five".