13729525 has 12 divisors (see below), whose sum is σ = 17104932. Its totient is φ = 10931840.

The previous prime is 13729517. The next prime is 13729537. The reversal of 13729525 is 52592731.

It can be written as a sum of positive squares in 6 ways, for example, as 2852721 + 10876804 = 1689^2 + 3298^2 .

It is not a de Polignac number, because 13729525 - 2³ = 13729517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4647 + ... + 7003.

It is an arithmetic number, because the mean of its divisors is an integer number (1425411).

Almost surely, 2^13729525 is an apocalyptic number.

It is an amenable number.

13729525 is a deficient number, since it is larger than the sum of its proper divisors (3375407).

13729525 is a wasteful number, since it uses less digits than its factorization.

13729525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2600 (or 2595 counting only the distinct ones).

The product of its digits is 18900, while the sum is 34.

The square root of 13729525 is about 3705.3373665565. The cubic root of 13729525 is about 239.4520194503.

The spelling of 13729525 in words is "thirteen million, seven hundred twenty-nine thousand, five hundred twenty-five".