19925782271 has 2 divisors, whose sum is σ = 19925782272. Its totient is φ = 19925782270.

The previous prime is 19925782243. The next prime is 19925782343. The reversal of 19925782271 is 17228752991.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 19925782271 - 2⁶ = 19925782207 is a prime.

It is a super-2 number, since 2×19925782271² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19925782171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9962891135 + 9962891136.

It is an arithmetic number, because the mean of its divisors is an integer number (9962891136).

Almost surely, 2^19925782271 is an apocalyptic number.

19925782271 is a deficient number, since it is larger than the sum of its proper divisors (1).

19925782271 is an equidigital number, since it uses as much as digits as its factorization.

19925782271 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1270080, while the sum is 53.

The spelling of 19925782271 in words is "nineteen billion, nine hundred twenty-five million, seven hundred eighty-two thousand, two hundred seventy-one".