6181225 has 6 divisors (see below), whose sum is σ = 7664750. Its totient is φ = 4944960.

The previous prime is 6181223. The next prime is 6181229. The reversal of 6181225 is 5221816.

It can be written as a sum of positive squares in 3 ways, for example, as 85264 + 6095961 = 292^2 + 2469^2 .

It is not a de Polignac number, because 6181225 - 2¹ = 6181223 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 247249 = 6181225 / (6 + 1 + 8 + 1 + 2 + 2 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 6181225.

It is not an unprimeable number, because it can be changed into a prime (6181223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 123600 + ... + 123649.

Almost surely, 2^6181225 is an apocalyptic number.

It is an amenable number.

6181225 is a deficient number, since it is larger than the sum of its proper divisors (1483525).

6181225 is a wasteful number, since it uses less digits than its factorization.

6181225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247259 (or 247254 counting only the distinct ones).

The product of its digits is 960, while the sum is 25.

The square root of 6181225 is about 2486.2069503563. The cubic root of 6181225 is about 183.5234300033.

The spelling of 6181225 in words is "six million, one hundred eighty-one thousand, two hundred twenty-five".