16625265637 has 2 divisors, whose sum is σ = 16625265638. Its totient is φ = 16625265636.

The previous prime is 16625265623. The next prime is 16625265737. The reversal of 16625265637 is 73656252661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16077986401 + 547279236 = 126799^2 + 23394^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16625265637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16625265737) 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 as a sum of consecutive naturals, namely, 8312632818 + 8312632819.

It is an arithmetic number, because the mean of its divisors is an integer number (8312632819).

Almost surely, 2^16625265637 is an apocalyptic number.

It is an amenable number.

16625265637 is a deficient number, since it is larger than the sum of its proper divisors (1).

16625265637 is an equidigital number, since it uses as much as digits as its factorization.

16625265637 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2721600, while the sum is 49.

The spelling of 16625265637 in words is "sixteen billion, six hundred twenty-five million, two hundred sixty-five thousand, six hundred thirty-seven".