1225664324 has 6 divisors (see below), whose sum is σ = 2144912574. Its totient is φ = 612832160.

The previous prime is 1225664311. The next prime is 1225664357. The reversal of 1225664324 is 4234665221.

It can be written as a sum of positive squares in only one way, i.e., 1224300100 + 1364224 = 34990^2 + 1168^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 153208037 + ... + 153208044.

It is an arithmetic number, because the mean of its divisors is an integer number (357485429).

Almost surely, 2^1225664324 is an apocalyptic number.

It is an amenable number.

1225664324 is a deficient number, since it is larger than the sum of its proper divisors (919248250).

1225664324 is a wasteful number, since it uses less digits than its factorization.

1225664324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306416085 (or 306416083 counting only the distinct ones).

The product of its digits is 69120, while the sum is 35.

The square root of 1225664324 is about 35009.4890565401. The cubic root of 1225664324 is about 1070.1808655741.

The spelling of 1225664324 in words is "one billion, two hundred twenty-five million, six hundred sixty-four thousand, three hundred twenty-four".