16625465387 has 2 divisors, whose sum is σ = 16625465388. Its totient is φ = 16625465386.

The previous prime is 16625465377. The next prime is 16625465399. The reversal of 16625465387 is 78356452661.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (78356452661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16625465387 - 2¹² = 16625461291 is a prime.

It is not a weakly prime, because it can be changed into another prime (16625465327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8312732693 + 8312732694.

It is an arithmetic number, because the mean of its divisors is an integer number (8312732694).

Almost surely, 2^16625465387 is an apocalyptic number.

16625465387 is a deficient number, since it is larger than the sum of its proper divisors (1).

16625465387 is an equidigital number, since it uses as much as digits as its factorization.

16625465387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7257600, while the sum is 53.

The spelling of 16625465387 in words is "sixteen billion, six hundred twenty-five million, four hundred sixty-five thousand, three hundred eighty-seven".