13013525 has 12 divisors (see below), whose sum is σ = 18442272. Its totient is φ = 8923440.

The previous prime is 13013513. The next prime is 13013527. The reversal of 13013525 is 52531031.

It is not a de Polignac number, because 13013525 - 2⁴ = 13013509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13013497 and 13013506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13013527) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37007 + ... + 37356.

It is an arithmetic number, because the mean of its divisors is an integer number (1536856).

Almost surely, 2^13013525 is an apocalyptic number.

It is an amenable number.

13013525 is a deficient number, since it is larger than the sum of its proper divisors (5428747).

13013525 is an equidigital number, since it uses as much as digits as its factorization.

13013525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74380 (or 74375 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 13013525 is about 3607.4263679249. The cubic root of 13013525 is about 235.2149835908.

Adding to 13013525 its reverse (52531031), we get a palindrome (65544556).

The spelling of 13013525 in words is "thirteen million, thirteen thousand, five hundred twenty-five".