1065506550625 has 20 divisors (see below), whose sum is σ = 1452498539184. Its totient is φ = 774913850000.

The previous prime is 1065506550587. The next prime is 1065506550629. The reversal of 1065506550625 is 5260556055601.

It is not a de Polignac number, because 1065506550625 - 2³⁵ = 1031146812257 is a prime.

It is a super-2 number, since 2×1065506550625² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1065506550629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 77484511 + ... + 77498260.

Almost surely, 2^{1065506550625} is an apocalyptic number.

It is an amenable number.

1065506550625 is a deficient number, since it is larger than the sum of its proper divisors (386991988559).

1065506550625 is an equidigital number, since it uses as much as digits as its factorization.

1065506550625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154982802 (or 154982787 counting only the distinct ones).

The product of its (nonzero) digits is 1350000, while the sum is 46.

The spelling of 1065506550625 in words is "one trillion, sixty-five billion, five hundred six million, five hundred fifty thousand, six hundred twenty-five".