11666414542025 has 12 divisors (see below), whose sum is σ = 14670105499584. Its totient is φ = 9201679074000.

The previous prime is 11666414542021. The next prime is 11666414542049. The reversal of 11666414542025 is 52024541466611.

It is not a de Polignac number, because 11666414542025 - 2² = 11666414542021 is a prime.

It is a super-2 number, since 2×11666414542025² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11666414542021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3286312181 + ... + 3286315730.

It is an arithmetic number, because the mean of its divisors is an integer number (1222508791632).

Almost surely, 2^{11666414542025} is an apocalyptic number.

It is an amenable number.

11666414542025 is a deficient number, since it is larger than the sum of its proper divisors (3003690957559).

11666414542025 is an equidigital number, since it uses as much as digits as its factorization.

11666414542025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6572627992 (or 6572627987 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 47.

The spelling of 11666414542025 in words is "eleven trillion, six hundred sixty-six billion, four hundred fourteen million, five hundred forty-two thousand, twenty-five".