16408893825 has 72 divisors (see below), whose sum is σ = 30458675520. Its totient is φ = 8434339200.

The previous prime is 16408893817. The next prime is 16408893871. The reversal of 16408893825 is 52839880461.

It is not a de Polignac number, because 16408893825 - 2³ = 16408893817 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 4193620 + ... + 4197530.

It is an arithmetic number, because the mean of its divisors is an integer number (423037160).

Almost surely, 2^16408893825 is an apocalyptic number.

16408893825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16408893825 is a deficient number, since it is larger than the sum of its proper divisors (14049781695).

16408893825 is a wasteful number, since it uses less digits than its factorization.

16408893825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4599 (or 4591 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 54.

The spelling of 16408893825 in words is "sixteen billion, four hundred eight million, eight hundred ninety-three thousand, eight hundred twenty-five".