13525415553 has 16 divisors (see below), whose sum is σ = 19834327296. Its totient is φ = 8146239360.

The previous prime is 13525415539. The next prime is 13525415587. The reversal of 13525415553 is 35551452531.

It is a de Polignac number, because none of the positive numbers 2^k-13525415553 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (13525415513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3687588 + ... + 3691253.

It is an arithmetic number, because the mean of its divisors is an integer number (1239645456).

Almost surely, 2^13525415553 is an apocalyptic number.

13525415553 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

13525415553 is a deficient number, since it is larger than the sum of its proper divisors (6308911743).

13525415553 is a wasteful number, since it uses less digits than its factorization.

13525415553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7378904.

The product of its digits is 225000, while the sum is 39.

The spelling of 13525415553 in words is "thirteen billion, five hundred twenty-five million, four hundred fifteen thousand, five hundred fifty-three".