10389243865225 has 9 divisors (see below), whose sum is σ = 12882682376967. Its totient is φ = 8311382199240.

The previous prime is 10389243865183. The next prime is 10389243865279. The reversal of 10389243865225 is 52256834298301.

The square root of 10389243865225 is 3223235.

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

It can be written as a sum of positive squares in only one way, i.e., 3740127791481 + 6649116073744 = 1933941^2 + 2578588^2 .

It is not a de Polignac number, because 10389243865225 - 2¹⁹ = 10389243340937 is a prime.

It is a super-2 number, since 2×10389243865225² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10389243865225.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 15793852 + ... + 16438498.

Almost surely, 2^{10389243865225} is an apocalyptic number.

10389243865225 is the 3223235-th square number.

10389243865225 is the 1611618-th centered octagonal number.

It is an amenable number.

10389243865225 is a deficient number, since it is larger than the sum of its proper divisors (2493438511742).

10389243865225 is an frugal number, since it uses more digits than its factorization.

10389243865225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1289304 (or 644652 counting only the distinct ones).

The product of its (nonzero) digits is 24883200, while the sum is 58.

The spelling of 10389243865225 in words is "ten trillion, three hundred eighty-nine billion, two hundred forty-three million, eight hundred sixty-five thousand, two hundred twenty-five".