1530225 has 24 divisors (see below), whose sum is σ = 2812320. Its totient is φ = 815760.

The previous prime is 1530197. The next prime is 1530227. The reversal of 1530225 is 5220351.

It is a happy number.

It is not a de Polignac number, because 1530225 - 2⁷ = 1530097 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1530198 and 1530207.

It is not an unprimeable number, because it can be changed into a prime (1530227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 459 + ... + 1808.

It is an arithmetic number, because the mean of its divisors is an integer number (117180).

2^1530225 is an apocalyptic number.

1530225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1530225 is a deficient number, since it is larger than the sum of its proper divisors (1282095).

1530225 is a wasteful number, since it uses less digits than its factorization.

1530225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2286 (or 2275 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 1530225 is about 1237.0226352012. The cubic root of 1530225 is about 115.2351834809.

Adding to 1530225 its reverse (5220351), we get a palindrome (6750576).

The spelling of 1530225 in words is "one million, five hundred thirty thousand, two hundred twenty-five".