1225530163 has 16 divisors (see below), whose sum is σ = 1441724256. Its totient is φ = 1027031040.

The previous prime is 1225530133. The next prime is 1225530179. The reversal of 1225530163 is 3610355221.

It is a cyclic number.

It is not a de Polignac number, because 1225530163 - 2²⁵ = 1191975731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1225530133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108595 + ... + 119347.

It is an arithmetic number, because the mean of its divisors is an integer number (90107766).

Almost surely, 2^1225530163 is an apocalyptic number.

1225530163 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1225530163 is a deficient number, since it is larger than the sum of its proper divisors (216194093).

1225530163 is a wasteful number, since it uses less digits than its factorization.

1225530163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11574.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 1225530163 is about 35007.5729378659. The cubic root of 1225530163 is about 1070.1418168799.

Adding to 1225530163 its reverse (3610355221), we get a palindrome (4835885384).

The spelling of 1225530163 in words is "one billion, two hundred twenty-five million, five hundred thirty thousand, one hundred sixty-three".