1224020625 has 20 divisors (see below), whose sum is σ = 2039384688. Its totient is φ = 652810000.

The previous prime is 1224020597. The next prime is 1224020659. The reversal of 1224020625 is 5260204221.

It is a happy number.

It is not a de Polignac number, because 1224020625 - 2⁶ = 1224020561 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1224020595 and 1224020604.

It is an unprimeable number.

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 19 ways as a sum of consecutive naturals, for example, 324531 + ... + 328280.

Almost surely, 2^1224020625 is an apocalyptic number.

1224020625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1224020625 is a deficient number, since it is larger than the sum of its proper divisors (815364063).

1224020625 is an frugal number, since it uses more digits than its factorization.

1224020625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652834 (or 652819 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 1224020625 is about 34986.0061310233. The cubic root of 1224020625 is about 1069.7022565162.

Adding to 1224020625 its reverse (5260204221), we get a palindrome (6484224846).

The spelling of 1224020625 in words is "one billion, two hundred twenty-four million, twenty thousand, six hundred twenty-five".