13507225 has 12 divisors (see below), whose sum is σ = 16802620. Its totient is φ = 10771200.

The previous prime is 13507223. The next prime is 13507237. The reversal of 13507225 is 52270531.

13507225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 1646089 + 11861136 = 1283^2 + 3444^2 .

It is not a de Polignac number, because 13507225 - 2¹ = 13507223 is a prime.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 13507225.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13507223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9565 + ... + 10885.

Almost surely, 2^13507225 is an apocalyptic number.

It is an amenable number.

13507225 is a deficient number, since it is larger than the sum of its proper divisors (3295395).

13507225 is a wasteful number, since it uses less digits than its factorization.

13507225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1740 (or 1735 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 13507225 is about 3675.2176806279. The cubic root of 13507225 is about 238.1526278960.

Adding to 13507225 its reverse (52270531), we get a palindrome (65777756).

The spelling of 13507225 in words is "thirteen million, five hundred seven thousand, two hundred twenty-five".