16500123250 has 64 divisors (see below), whose sum is σ = 33469398144. Its totient is φ = 6054782400.

The previous prime is 16500123247. The next prime is 16500123281. The reversal of 16500123250 is 5232100561.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 514177 + ... + 545323.

It is an arithmetic number, because the mean of its divisors is an integer number (522959346).

Almost surely, 2^16500123250 is an apocalyptic number.

16500123250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16500123250 is an abundant number, since it is smaller than the sum of its proper divisors (16969274894).

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

16500123250 is a wasteful number, since it uses less digits than its factorization.

16500123250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31340 (or 31330 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The spelling of 16500123250 in words is "sixteen billion, five hundred million, one hundred twenty-three thousand, two hundred fifty".