13525797 has 4 divisors (see below), whose sum is σ = 18034400. Its totient is φ = 9017196.

The previous prime is 13525793. The next prime is 13525849. The reversal of 13525797 is 79752531.

13525797 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 79752531 = 3 ⋅26584177.

It is not a de Polignac number, because 13525797 - 2² = 13525793 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 (13525793) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2254297 + ... + 2254302.

It is an arithmetic number, because the mean of its divisors is an integer number (4508600).

Almost surely, 2^13525797 is an apocalyptic number.

It is an amenable number.

13525797 is a deficient number, since it is larger than the sum of its proper divisors (4508603).

13525797 is an equidigital number, since it uses as much as digits as its factorization.

13525797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4508602.

The product of its digits is 66150, while the sum is 39.

The square root of 13525797 is about 3677.7434657681. The cubic root of 13525797 is about 238.2617286428.

The spelling of 13525797 in words is "thirteen million, five hundred twenty-five thousand, seven hundred ninety-seven".