16368666225 has 24 divisors (see below), whose sum is σ = 27076621152. Its totient is φ = 8725516800.

The previous prime is 16368666203. The next prime is 16368666287. The reversal of 16368666225 is 52266686361.

It is not a de Polignac number, because 16368666225 - 2²⁰ = 16367617649 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 95745 + ... + 204705.

It is an arithmetic number, because the mean of its divisors is an integer number (1128192548).

Almost surely, 2^16368666225 is an apocalyptic number.

16368666225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16368666225 is a deficient number, since it is larger than the sum of its proper divisors (10707954927).

16368666225 is a wasteful number, since it uses less digits than its factorization.

16368666225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110977 (or 110972 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 51.

The spelling of 16368666225 in words is "sixteen billion, three hundred sixty-eight million, six hundred sixty-six thousand, two hundred twenty-five".