8516737539025 has 9 divisors (see below), whose sum is σ = 10560772642161. Its totient is φ = 6813378357840.

The previous prime is 8516737538963. The next prime is 8516737539047. The reversal of 8516737539025 is 5209357376158.

The square root of 8516737539025 is 2918345.

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

It can be written as a sum of positive squares in 4 ways, for example, as 1953221470929 + 6563516068096 = 1397577^2 + 2561936^2 .

It is not a de Polignac number, because 8516737539025 - 2²¹ = 8516735441873 is a prime.

It is a super-2 number, since 2×8516737539025² (a number of 27 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 8 ways as a sum of consecutive naturals, for example, 14299891 + ... + 14883559.

Almost surely, 2^{8516737539025} is an apocalyptic number.

8516737539025 is the 2918345-th square number.

8516737539025 is the 1459173-rd centered octagonal number.

It is an amenable number.

8516737539025 is a deficient number, since it is larger than the sum of its proper divisors (2044035103136).

8516737539025 is an frugal number, since it uses more digits than its factorization.

8516737539025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1167348 (or 583674 counting only the distinct ones).

The product of its (nonzero) digits is 47628000, while the sum is 61.

The spelling of 8516737539025 in words is "eight trillion, five hundred sixteen billion, seven hundred thirty-seven million, five hundred thirty-nine thousand, twenty-five".