20254409969 has 2 divisors, whose sum is σ = 20254409970. Its totient is φ = 20254409968.

The previous prime is 20254409933. The next prime is 20254410053. The reversal of 20254409969 is 96990445202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18012860944 + 2241549025 = 134212^2 + 47345^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20254409969 is a prime.

It is a super-2 number, since 2×20254409969² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20254439969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10127204984 + 10127204985.

It is an arithmetic number, because the mean of its divisors is an integer number (10127204985).

Almost surely, 2^20254409969 is an apocalyptic number.

It is an amenable number.

20254409969 is a deficient number, since it is larger than the sum of its proper divisors (1).

20254409969 is an equidigital number, since it uses as much as digits as its factorization.

20254409969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1399680, while the sum is 50.

The spelling of 20254409969 in words is "twenty billion, two hundred fifty-four million, four hundred nine thousand, nine hundred sixty-nine".