25606105453 has 2 divisors, whose sum is σ = 25606105454. Its totient is φ = 25606105452.

The previous prime is 25606105409. The next prime is 25606105501. The reversal of 25606105453 is 35450160652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24265227529 + 1340877924 = 155773^2 + 36618^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25606105453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25606105403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12803052726 + 12803052727.

It is an arithmetic number, because the mean of its divisors is an integer number (12803052727).

Almost surely, 2^25606105453 is an apocalyptic number.

It is an amenable number.

25606105453 is a deficient number, since it is larger than the sum of its proper divisors (1).

25606105453 is an equidigital number, since it uses as much as digits as its factorization.

25606105453 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108000, while the sum is 37.

The spelling of 25606105453 in words is "twenty-five billion, six hundred six million, one hundred five thousand, four hundred fifty-three".