13557225 has 24 divisors (see below), whose sum is σ = 24453792. Its totient is φ = 6572800.

The previous prime is 13557217. The next prime is 13557251. The reversal of 13557225 is 52275531.

It is not a de Polignac number, because 13557225 - 2³ = 13557217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13557192 and 13557201.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7392 + ... + 9041.

It is an arithmetic number, because the mean of its divisors is an integer number (1018908).

Almost surely, 2^13557225 is an apocalyptic number.

13557225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13557225 is a deficient number, since it is larger than the sum of its proper divisors (10896567).

13557225 is a wasteful number, since it uses less digits than its factorization.

13557225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16457 (or 16452 counting only the distinct ones).

The product of its digits is 10500, while the sum is 30.

The square root of 13557225 is about 3682.0137153465. The cubic root of 13557225 is about 238.4461243672.

The spelling of 13557225 in words is "thirteen million, five hundred fifty-seven thousand, two hundred twenty-five".