13137225 has 24 divisors (see below), whose sum is σ = 21933120. Its totient is φ = 6937920.

The previous prime is 13137221. The next prime is 13137233. The reversal of 13137225 is 52273131.

It is not a de Polignac number, because 13137225 - 2² = 13137221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13137195 and 13137204.

It is not an unprimeable number, because it can be changed into a prime (13137221) 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 23 ways as a sum of consecutive naturals, for example, 7372 + ... + 8978.

It is an arithmetic number, because the mean of its divisors is an integer number (913880).

Almost surely, 2^13137225 is an apocalyptic number.

13137225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13137225 is a deficient number, since it is larger than the sum of its proper divisors (8795895).

13137225 is a wasteful number, since it uses less digits than its factorization.

13137225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1729 (or 1724 counting only the distinct ones).

The product of its digits is 1260, while the sum is 24.

The square root of 13137225 is about 3624.5310041438. The cubic root of 13137225 is about 235.9579128721.

The spelling of 13137225 in words is "thirteen million, one hundred thirty-seven thousand, two hundred twenty-five".