1224631225 has 24 divisors (see below), whose sum is σ = 1608374240. Its totient is φ = 922389120.

The previous prime is 1224631153. The next prime is 1224631249. The reversal of 1224631225 is 5221364221.

It is not a de Polignac number, because 1224631225 - 2⁹ = 1224630713 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1224631193 and 1224631202.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69517 + ... + 85333.

Almost surely, 2^1224631225 is an apocalyptic number.

It is an amenable number.

1224631225 is a deficient number, since it is larger than the sum of its proper divisors (383743015).

1224631225 is a wasteful number, since it uses less digits than its factorization.

1224631225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16009 (or 16004 counting only the distinct ones).

The product of its digits is 5760, while the sum is 28.

The square root of 1224631225 is about 34994.7313891677. The cubic root of 1224631225 is about 1069.8800998208.

Adding to 1224631225 its reverse (5221364221), we get a palindrome (6445995446).

The spelling of 1224631225 in words is "one billion, two hundred twenty-four million, six hundred thirty-one thousand, two hundred twenty-five".