25024135109 has 2 divisors, whose sum is σ = 25024135110. Its totient is φ = 25024135108.

The previous prime is 25024135093. The next prime is 25024135139. The reversal of 25024135109 is 90153142052.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17437202500 + 7586932609 = 132050^2 + 87103^2 .

It is a cyclic number.

It is not a de Polignac number, because 25024135109 - 2⁴ = 25024135093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25024135139) 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, 12512067554 + 12512067555.

It is an arithmetic number, because the mean of its divisors is an integer number (12512067555).

Almost surely, 2^25024135109 is an apocalyptic number.

It is an amenable number.

25024135109 is a deficient number, since it is larger than the sum of its proper divisors (1).

25024135109 is an equidigital number, since it uses as much as digits as its factorization.

25024135109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 32.

The spelling of 25024135109 in words is "twenty-five billion, twenty-four million, one hundred thirty-five thousand, one hundred nine".