25305414109 has 2 divisors, whose sum is σ = 25305414110. Its totient is φ = 25305414108.

The previous prime is 25305414053. The next prime is 25305414137. The reversal of 25305414109 is 90141450352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25277820100 + 27594009 = 158990^2 + 5253^2 .

It is a cyclic number.

It is not a de Polignac number, because 25305414109 - 2⁷ = 25305413981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25305414179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12652707054 + 12652707055.

It is an arithmetic number, because the mean of its divisors is an integer number (12652707055).

Almost surely, 2^25305414109 is an apocalyptic number.

It is an amenable number.

25305414109 is a deficient number, since it is larger than the sum of its proper divisors (1).

25305414109 is an equidigital number, since it uses as much as digits as its factorization.

25305414109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21600, while the sum is 34.

The spelling of 25305414109 in words is "twenty-five billion, three hundred five million, four hundred fourteen thousand, one hundred nine".