16812185625 has 60 divisors (see below), whose sum is σ = 31942962480. Its totient is φ = 8494524000.

The previous prime is 16812185603. The next prime is 16812185651. The reversal of 16812185625 is 52658121861.

16812185625 is a `hidden beast` number, since 1 + 6 + 8 + 1 + 2 + 18 + 5 + 625 = 666.

It is not a de Polignac number, because 16812185625 - 2⁶ = 16812185561 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 28222 + ... + 185528.

It is an arithmetic number, because the mean of its divisors is an integer number (532382708).

Almost surely, 2^16812185625 is an apocalyptic number.

16812185625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16812185625 is a deficient number, since it is larger than the sum of its proper divisors (15130776855).

16812185625 is a wasteful number, since it uses less digits than its factorization.

16812185625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157352 (or 157334 counting only the distinct ones).

The product of its digits is 230400, while the sum is 45.

The spelling of 16812185625 in words is "sixteen billion, eight hundred twelve million, one hundred eighty-five thousand, six hundred twenty-five".