16625489394 has 16 divisors (see below), whose sum is σ = 33312447360. Its totient is φ = 5531585040.

The previous prime is 16625489393. The next prime is 16625489509. The reversal of 16625489394 is 49398452661.

It is not an unprimeable number, because it can be changed into a prime (16625489393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2557674 + ... + 2564165.

It is an arithmetic number, because the mean of its divisors is an integer number (2082027960).

Almost surely, 2^16625489394 is an apocalyptic number.

16625489394 is an abundant number, since it is smaller than the sum of its proper divisors (16686957966).

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

16625489394 is a wasteful number, since it uses less digits than its factorization.

16625489394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5122385.

The product of its digits is 11197440, while the sum is 57.

The spelling of 16625489394 in words is "sixteen billion, six hundred twenty-five million, four hundred eighty-nine thousand, three hundred ninety-four".