13127225 has 12 divisors (see below), whose sum is σ = 16503036. Its totient is φ = 10356480.

The previous prime is 13127221. The next prime is 13127237. The reversal of 13127225 is 52272131.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 1763584 + 11363641 = 1328^2 + 3371^2 .

It is not a de Polignac number, because 13127225 - 2² = 13127221 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 13127225.

It is not an unprimeable number, because it can be changed into a prime (13127221) 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 11 ways as a sum of consecutive naturals, for example, 1772 + ... + 5421.

It is an arithmetic number, because the mean of its divisors is an integer number (1375253).

Almost surely, 2^13127225 is an apocalyptic number.

It is an amenable number.

13127225 is a deficient number, since it is larger than the sum of its proper divisors (3375811).

13127225 is an equidigital number, since it uses as much as digits as its factorization.

13127225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7276 (or 7271 counting only the distinct ones).

The product of its digits is 840, while the sum is 23.

The square root of 13127225 is about 3623.1512527081. The cubic root of 13127225 is about 235.8980276203.

Adding to 13127225 its reverse (52272131), we get a palindrome (65399356).

The spelling of 13127225 in words is "thirteen million, one hundred twenty-seven thousand, two hundred twenty-five".