16690667925 has 24 divisors (see below), whose sum is σ = 27621329344. Its totient is φ = 8893272960.

The previous prime is 16690667923. The next prime is 16690667947. The reversal of 16690667925 is 52976609661.

It is not a de Polignac number, because 16690667925 - 2¹ = 16690667923 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16690667923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24952 + ... + 184401.

Almost surely, 2^16690667925 is an apocalyptic number.

16690667925 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16690667925 is a deficient number, since it is larger than the sum of its proper divisors (10930661419).

16690667925 is a wasteful number, since it uses less digits than its factorization.

16690667925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210429 (or 210424 counting only the distinct ones).

The product of its (nonzero) digits is 7348320, while the sum is 57.

The spelling of 16690667925 in words is "sixteen billion, six hundred ninety million, six hundred sixty-seven thousand, nine hundred twenty-five".