13625463666 has 16 divisors (see below), whose sum is σ = 28129989888. Its totient is φ = 4395310800.

The previous prime is 13625463661. The next prime is 13625463667. The reversal of 13625463666 is 66636452631.

It is a super-2 number, since 2×13625463666² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13625463661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36627405 + ... + 36627776.

It is an arithmetic number, because the mean of its divisors is an integer number (1758124368).

Almost surely, 2^13625463666 is an apocalyptic number.

13625463666 is an abundant number, since it is smaller than the sum of its proper divisors (14504526222).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13625463666 is a wasteful number, since it uses less digits than its factorization.

13625463666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73255217.

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

The spelling of 13625463666 in words is "thirteen billion, six hundred twenty-five million, four hundred sixty-three thousand, six hundred sixty-six".