1166646600025 has 12 divisors (see below), whose sum is σ = 1447860558672. Its totient is φ = 932530973840.

The previous prime is 1166646600023. The next prime is 1166646600059. The reversal of 1166646600025 is 5200066466611.

It is not a de Polignac number, because 1166646600025 - 2¹ = 1166646600023 is a prime.

It is a super-2 number, since 2×1166646600025² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1166646600023) 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 11 ways as a sum of consecutive naturals, for example, 19627387 + ... + 19686736.

It is an arithmetic number, because the mean of its divisors is an integer number (120655046556).

Almost surely, 2^{1166646600025} is an apocalyptic number.

It is an amenable number.

1166646600025 is a deficient number, since it is larger than the sum of its proper divisors (281213958647).

1166646600025 is a wasteful number, since it uses less digits than its factorization.

1166646600025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39315320 (or 39315315 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 43.

It can be divided in two parts, 1166646 and 600025, that added together give a palindrome (1766671).

The spelling of 1166646600025 in words is "one trillion, one hundred sixty-six billion, six hundred forty-six million, six hundred thousand, twenty-five".