16725220957 has 2 divisors, whose sum is σ = 16725220958. Its totient is φ = 16725220956.

The previous prime is 16725220951. The next prime is 16725220969. The reversal of 16725220957 is 75902252761.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13913146116 + 2812074841 = 117954^2 + 53029^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16725220957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16725220951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8362610478 + 8362610479.

It is an arithmetic number, because the mean of its divisors is an integer number (8362610479).

Almost surely, 2^16725220957 is an apocalyptic number.

It is an amenable number.

16725220957 is a deficient number, since it is larger than the sum of its proper divisors (1).

16725220957 is an equidigital number, since it uses as much as digits as its factorization.

16725220957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 529200, while the sum is 46.

The spelling of 16725220957 in words is "sixteen billion, seven hundred twenty-five million, two hundred twenty thousand, nine hundred fifty-seven".