16616011725 has 72 divisors (see below), whose sum is σ = 30367139712. Its totient is φ = 8682854400.

The previous prime is 16616011723. The next prime is 16616011733. The reversal of 16616011725 is 52711061661.

It is a happy number.

16616011725 is a `hidden beast` number, since 1 + 6 + 616 + 0 + 1 + 17 + 25 = 666.

It is not a de Polignac number, because 16616011725 - 2¹ = 16616011723 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16616011725.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16616011723) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2906620 + ... + 2912330.

Almost surely, 2^16616011725 is an apocalyptic number.

16616011725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16616011725 is a deficient number, since it is larger than the sum of its proper divisors (13751127987).

16616011725 is a wasteful number, since it uses less digits than its factorization.

16616011725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5987 (or 5979 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The spelling of 16616011725 in words is "sixteen billion, six hundred sixteen million, eleven thousand, seven hundred twenty-five".