13525157 has 4 divisors (see below), whose sum is σ = 13537440. Its totient is φ = 13512876.

The previous prime is 13525153. The next prime is 13525159. The reversal of 13525157 is 75152531.

It is a happy number.

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: 75152531 = 1187 ⋅63313.

It is a cyclic number.

It is not a de Polignac number, because 13525157 - 2² = 13525153 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 (13525153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4307 + ... + 6752.

It is an arithmetic number, because the mean of its divisors is an integer number (3384360).

Almost surely, 2^13525157 is an apocalyptic number.

It is an amenable number.

13525157 is a deficient number, since it is larger than the sum of its proper divisors (12283).

13525157 is a wasteful number, since it uses less digits than its factorization.

13525157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12282.

The product of its digits is 5250, while the sum is 29.

The square root of 13525157 is about 3677.6564548636. The cubic root of 13525157 is about 238.2579706409.

Adding to 13525157 its reverse (75152531), we get a palindrome (88677688).

The spelling of 13525157 in words is "thirteen million, five hundred twenty-five thousand, one hundred fifty-seven".