1066015805525 has 12 divisors (see below), whose sum is σ = 1442028653664. Its totient is φ = 775284222000.

The previous prime is 1066015805507. The next prime is 1066015805527. The reversal of 1066015805525 is 5255085106601.

It is not a de Polignac number, because 1066015805525 - 2⁸ = 1066015805269 is a prime.

It is a super-2 number, since 2×1066015805525² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066015805527) 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, 1938210281 + ... + 1938210830.

It is an arithmetic number, because the mean of its divisors is an integer number (120169054472).

Almost surely, 2^{1066015805525} is an apocalyptic number.

It is an amenable number.

1066015805525 is a deficient number, since it is larger than the sum of its proper divisors (376012848139).

1066015805525 is a wasteful number, since it uses less digits than its factorization.

1066015805525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3876421132 (or 3876421127 counting only the distinct ones).

The product of its (nonzero) digits is 360000, while the sum is 44.

The spelling of 1066015805525 in words is "one trillion, sixty-six billion, fifteen million, eight hundred five thousand, five hundred twenty-five".