13666366425 has 48 divisors (see below), whose sum is σ = 23214014208. Its totient is φ = 7090440000.

The previous prime is 13666366423. The next prime is 13666366429. The reversal of 13666366425 is 52466366631.

It is not a de Polignac number, because 13666366425 - 2¹ = 13666366423 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13666366421) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 801034 + ... + 817916.

It is an arithmetic number, because the mean of its divisors is an integer number (483625296).

Almost surely, 2^13666366425 is an apocalyptic number.

13666366425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13666366425 is a deficient number, since it is larger than the sum of its proper divisors (9547647783).

13666366425 is a wasteful number, since it uses less digits than its factorization.

13666366425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17190 (or 17185 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 48.

The spelling of 13666366425 in words is "thirteen billion, six hundred sixty-six million, three hundred sixty-six thousand, four hundred twenty-five".