2616516212225 has 12 divisors (see below), whose sum is σ = 3245334706044. Its totient is φ = 2092661613120.

The previous prime is 2616516212221. The next prime is 2616516212251. The reversal of 2616516212225 is 5222126156162.

It can be written as a sum of positive squares in 6 ways, for example, as 447859423729 + 2168656788496 = 669223^2 + 1472636^2 .

It is not a de Polignac number, because 2616516212225 - 2² = 2616516212221 is a prime.

It is a super-2 number, since 2×2616516212225² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2616516212221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13687094 + ... + 13876943.

It is an arithmetic number, because the mean of its divisors is an integer number (270444558837).

Almost surely, 2^{2616516212225} is an apocalyptic number.

2616516212225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2616516212225 is a deficient number, since it is larger than the sum of its proper divisors (628818493819).

2616516212225 is a wasteful number, since it uses less digits than its factorization.

2616516212225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27567844 (or 27567839 counting only the distinct ones).

The product of its digits is 172800, while the sum is 41.

The spelling of 2616516212225 in words is "two trillion, six hundred sixteen billion, five hundred sixteen million, two hundred twelve thousand, two hundred twenty-five".