17925821201 has 2 divisors, whose sum is σ = 17925821202. Its totient is φ = 17925821200.

The previous prime is 17925821171. The next prime is 17925821203. The reversal of 17925821201 is 10212852971.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10368126976 + 7557694225 = 101824^2 + 86935^2 .

It is a cyclic number.

It is not a de Polignac number, because 17925821201 - 2³⁴ = 745952017 is a prime.

Together with 17925821203, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (17925821203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8962910600 + 8962910601.

It is an arithmetic number, because the mean of its divisors is an integer number (8962910601).

Almost surely, 2^17925821201 is an apocalyptic number.

It is an amenable number.

17925821201 is a deficient number, since it is larger than the sum of its proper divisors (1).

17925821201 is an equidigital number, since it uses as much as digits as its factorization.

17925821201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 38.

The spelling of 17925821201 in words is "seventeen billion, nine hundred twenty-five million, eight hundred twenty-one thousand, two hundred one".