9573644025 has 81 divisors (see below), whose sum is σ = 18879872557. Its totient is φ = 4633939200.

The previous prime is 9573643999. The next prime is 9573644051. The reversal of 9573644025 is 5204463759.

The square root of 9573644025 is 97845.

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

It is an interprime number because it is at equal distance from previous prime (9573643999) and next prime (9573644051).

It can be written as a sum of positive squares in 4 ways, for example, as 6456681 + 9567187344 = 2541^2 + 97812^2 .

It is not a de Polignac number, because 9573644025 - 2¹¹ = 9573641977 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 polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 16144129 + ... + 16144721.

Almost surely, 2^9573644025 is an apocalyptic number.

9573644025 is the 97845-th square number.

9573644025 is the 48923-rd centered octagonal number.

It is an amenable number.

9573644025 is a deficient number, since it is larger than the sum of its proper divisors (9306228532).

9573644025 is a wasteful number, since it uses less digits than its factorization.

9573644025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1224 (or 612 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 45.

The cubic root of 9573644025 is about 2123.3703972203.

The spelling of 9573644025 in words is "nine billion, five hundred seventy-three million, six hundred forty-four thousand, twenty-five".