5991112905625 has 45 divisors (see below), whose sum is σ = 7902792564843. Its totient is φ = 4539751776000.

The previous prime is 5991112905521. The next prime is 5991112905637. The reversal of 5991112905625 is 5265092111995.

It is a happy number.

The square root of 5991112905625 is 2447675.

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

It can be written as a sum of positive squares in 7 ways, for example, as 3884852826009 + 2106260079616 = 1971003^2 + 1451296^2 .

It is not a de Polignac number, because 5991112905625 - 2²⁹ = 5990576034713 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 1162643049 + ... + 1162648201.

Almost surely, 2^{5991112905625} is an apocalyptic number.

5991112905625 is the 2447675-th square number.

5991112905625 is the 1223838-th centered octagonal number.

It is an amenable number.

5991112905625 is a deficient number, since it is larger than the sum of its proper divisors (1911679659218).

5991112905625 is an frugal number, since it uses more digits than its factorization.

5991112905625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10364 (or 5177 counting only the distinct ones).

The product of its (nonzero) digits is 2187000, while the sum is 55.

The spelling of 5991112905625 in words is "five trillion, nine hundred ninety-one billion, one hundred twelve million, nine hundred five thousand, six hundred twenty-five".