13525315553 has 4 divisors (see below), whose sum is σ = 13890864660. Its totient is φ = 13159766448.

The previous prime is 13525315543. The next prime is 13525315567. The reversal of 13525315553 is 35551352531.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8752163809 + 4773151744 = 93553^2 + 69088^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13525315553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13525315543) 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, 182774498 + ... + 182774571.

It is an arithmetic number, because the mean of its divisors is an integer number (3472716165).

Almost surely, 2^13525315553 is an apocalyptic number.

It is an amenable number.

13525315553 is a deficient number, since it is larger than the sum of its proper divisors (365549107).

13525315553 is an equidigital number, since it uses as much as digits as its factorization.

13525315553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365549106.

The product of its digits is 168750, while the sum is 38.

The spelling of 13525315553 in words is "thirteen billion, five hundred twenty-five million, three hundred fifteen thousand, five hundred fifty-three".