25440000029 has 2 divisors, whose sum is σ = 25440000030. Its totient is φ = 25440000028.

The previous prime is 25440000007. The next prime is 25440000073. The reversal of 25440000029 is 92000004452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17068116025 + 8371884004 = 130645^2 + 91498^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25440000029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25439999962 and 25440000007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25440005029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12720000014 + 12720000015.

It is an arithmetic number, because the mean of its divisors is an integer number (12720000015).

Almost surely, 2^25440000029 is an apocalyptic number.

It is an amenable number.

25440000029 is a deficient number, since it is larger than the sum of its proper divisors (1).

25440000029 is an equidigital number, since it uses as much as digits as its factorization.

25440000029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 26.

The spelling of 25440000029 in words is "twenty-five billion, four hundred forty million, twenty-nine", and thus it is an aban number.