133825838989 has 2 divisors, whose sum is σ = 133825838990. Its totient is φ = 133825838988.

The previous prime is 133825838969. The next prime is 133825839001. The reversal of 133825838989 is 989838528331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 133173904900 + 651934089 = 364930^2 + 25533^2 .

It is a cyclic number.

It is not a de Polignac number, because 133825838989 - 2¹¹ = 133825836941 is a prime.

It is a super-2 number, since 2×133825838989² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133825838969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66912919494 + 66912919495.

It is an arithmetic number, because the mean of its divisors is an integer number (66912919495).

Almost surely, 2^133825838989 is an apocalyptic number.

It is an amenable number.

133825838989 is a deficient number, since it is larger than the sum of its proper divisors (1).

133825838989 is an equidigital number, since it uses as much as digits as its factorization.

133825838989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 89579520, while the sum is 67.

The spelling of 133825838989 in words is "one hundred thirty-three billion, eight hundred twenty-five million, eight hundred thirty-eight thousand, nine hundred eighty-nine".