40425644029 has 2 divisors, whose sum is σ = 40425644030. Its totient is φ = 40425644028.

The previous prime is 40425643931. The next prime is 40425644041. The reversal of 40425644029 is 92044652404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39163618404 + 1262025625 = 197898^2 + 35525^2 .

It is a cyclic number.

It is not a de Polignac number, because 40425644029 - 2¹⁷ = 40425512957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40425643982 and 40425644000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40425644429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20212822014 + 20212822015.

It is an arithmetic number, because the mean of its divisors is an integer number (20212822015).

Almost surely, 2^40425644029 is an apocalyptic number.

It is an amenable number.

40425644029 is a deficient number, since it is larger than the sum of its proper divisors (1).

40425644029 is an equidigital number, since it uses as much as digits as its factorization.

40425644029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 276480, while the sum is 40.

The spelling of 40425644029 in words is "forty billion, four hundred twenty-five million, six hundred forty-four thousand, twenty-nine".