10643017225 has 27 divisors (see below), whose sum is σ = 13514895687. Its totient is φ = 8314273680.

The previous prime is 10643017213. The next prime is 10643017237. The reversal of 10643017225 is 52271034601.

The square root of 10643017225 is 103165.

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 (10643017213) and next prime (10643017237).

It can be written as a sum of positive squares in only one way, i.e., 3831486201 + 6811531024 = 61899^2 + 82532^2 .

It is not a de Polignac number, because 10643017225 - 2⁵ = 10643017193 is a prime.

It is a super-2 number, since 2×10643017225² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 24243556 + ... + 24243994.

Almost surely, 2^10643017225 is an apocalyptic number.

10643017225 is the 103165-th square number.

10643017225 is the 51583-rd centered octagonal number.

It is an amenable number.

10643017225 is a deficient number, since it is larger than the sum of its proper divisors (2871878462).

10643017225 is an frugal number, since it uses more digits than its factorization.

10643017225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 982 (or 491 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The spelling of 10643017225 in words is "ten billion, six hundred forty-three million, seventeen thousand, two hundred twenty-five".