13928525 has 24 divisors (see below), whose sum is σ = 19701864. Its totient is φ = 9676800.

The previous prime is 13928503. The next prime is 13928531. The reversal of 13928525 is 52582931.

13928525 is nontrivially palindromic in base 16.

It can be written as a sum of positive squares in 12 ways, for example, as 9357481 + 4571044 = 3059^2 + 2138^2 .

It is not a de Polignac number, because 13928525 - 2⁶ = 13928461 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4265 + ... + 6785.

It is an arithmetic number, because the mean of its divisors is an integer number (820911).

Almost surely, 2^13928525 is an apocalyptic number.

It is an amenable number.

13928525 is a deficient number, since it is larger than the sum of its proper divisors (5773339).

13928525 is a wasteful number, since it uses less digits than its factorization.

13928525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2561 (or 2556 counting only the distinct ones).

The product of its digits is 21600, while the sum is 35.

The square root of 13928525 is about 3732.0939162888. The cubic root of 13928525 is about 240.6033718684.

The spelling of 13928525 in words is "thirteen million, nine hundred twenty-eight thousand, five hundred twenty-five".