9744651225 has 27 divisors (see below), whose sum is σ = 17456405629. Its totient is φ = 5196357600.

The previous prime is 9744651211. The next prime is 9744651263. The reversal of 9744651225 is 5221564479.

The square root of 9744651225 is 98715.

It is a perfect power (a square), and thus also a powerful number.

9744651225 is a `hidden beast` number, since 9 + 74 + 46 + 512 + 25 = 666.

9744651225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1592728281 + 8151922944 = 39909^2 + 90288^2 .

It is not a de Polignac number, because 9744651225 - 2²³ = 9736262617 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1477435 + ... + 1484015.

Almost surely, 2^9744651225 is an apocalyptic number.

9744651225 is the 98715-th square number.

9744651225 is the 49358-th centered octagonal number.

It is an amenable number.

9744651225 is a deficient number, since it is larger than the sum of its proper divisors (7711754404).

9744651225 is an frugal number, since it uses more digits than its factorization.

9744651225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13178 (or 6589 counting only the distinct ones).

The product of its digits is 604800, while the sum is 45.

The cubic root of 9744651225 is about 2135.9386114422.

It can be divided in two parts, 9744 and 651225, that added together give a square (660969 = 813²).

The spelling of 9744651225 in words is "nine billion, seven hundred forty-four million, six hundred fifty-one thousand, two hundred twenty-five".