13625553 has 4 divisors (see below), whose sum is σ = 18167408. Its totient is φ = 9083700.

The previous prime is 13625543. The next prime is 13625569. The reversal of 13625553 is 35552631.

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: 35552631 = 3 ⋅11850877.

It is not a de Polignac number, because 13625553 - 2⁴ = 13625537 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13625553.

It is not an unprimeable number, because it can be changed into a prime (13625533) 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, 2270923 + ... + 2270928.

It is an arithmetic number, because the mean of its divisors is an integer number (4541852).

Almost surely, 2^13625553 is an apocalyptic number.

It is an amenable number.

13625553 is a deficient number, since it is larger than the sum of its proper divisors (4541855).

13625553 is an equidigital number, since it uses as much as digits as its factorization.

13625553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4541854.

The product of its digits is 13500, while the sum is 30.

The square root of 13625553 is about 3691.2806720703. The cubic root of 13625553 is about 238.8460403248.

The spelling of 13625553 in words is "thirteen million, six hundred twenty-five thousand, five hundred fifty-three".