16668154425 has 24 divisors (see below), whose sum is σ = 29677864384. Its totient is φ = 8205860160.

The previous prime is 16668154417. The next prime is 16668154427. The reversal of 16668154425 is 52445186661.

It is not a de Polignac number, because 16668154425 - 2³ = 16668154417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16668154427) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8546797 + ... + 8548746.

Almost surely, 2^16668154425 is an apocalyptic number.

16668154425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16668154425 is a deficient number, since it is larger than the sum of its proper divisors (13009709959).

16668154425 is a wasteful number, since it uses less digits than its factorization.

16668154425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17095569 (or 17095564 counting only the distinct ones).

The product of its digits is 1382400, while the sum is 48.

The spelling of 16668154425 in words is "sixteen billion, six hundred sixty-eight million, one hundred fifty-four thousand, four hundred twenty-five".