1225130530 has 32 divisors (see below), whose sum is σ = 2407419504. Its totient is φ = 446155776.

The previous prime is 1225130477. The next prime is 1225130539. The reversal of 1225130530 is 350315221.

It can be written as a sum of positive squares in 8 ways, for example, as 231557089 + 993573441 = 15217^2 + 31521^2 .

It is not an unprimeable number, because it can be changed into a prime (1225130539) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55059 + ... + 74038.

Almost surely, 2^1225130530 is an apocalyptic number.

1225130530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1225130530 is a deficient number, since it is larger than the sum of its proper divisors (1182288974).

1225130530 is a wasteful number, since it uses less digits than its factorization.

1225130530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129190.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 1225130530 is about 35001.8646646147. The cubic root of 1225130530 is about 1070.0254834237.

Adding to 1225130530 its reverse (350315221), we get a palindrome (1575445751).

The spelling of 1225130530 in words is "one billion, two hundred twenty-five million, one hundred thirty thousand, five hundred thirty".