1425909684181 has 2 divisors, whose sum is σ = 1425909684182. Its totient is φ = 1425909684180.

The previous prime is 1425909684179. The next prime is 1425909684203. The reversal of 1425909684181 is 1814869095241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1416197581681 + 9712102500 = 1190041^2 + 98550^2 .

It is a cyclic number.

It is not a de Polignac number, because 1425909684181 - 2¹ = 1425909684179 is a prime.

It is a super-2 number, since 2×1425909684181² (a number of 25 digits) contains 22 as substring.

Together with 1425909684179, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1425909684161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 712954842090 + 712954842091.

It is an arithmetic number, because the mean of its divisors is an integer number (712954842091).

Almost surely, 2^{1425909684181} is an apocalyptic number.

It is an amenable number.

1425909684181 is a deficient number, since it is larger than the sum of its proper divisors (1).

1425909684181 is an equidigital number, since it uses as much as digits as its factorization.

1425909684181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4976640, while the sum is 58.

The spelling of 1425909684181 in words is "one trillion, four hundred twenty-five billion, nine hundred nine million, six hundred eighty-four thousand, one hundred eighty-one".