25445224117 has 2 divisors, whose sum is σ = 25445224118. Its totient is φ = 25445224116.

The previous prime is 25445224039. The next prime is 25445224127. The reversal of 25445224117 is 71142254452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24608510641 + 836713476 = 156871^2 + 28926^2 .

It is a cyclic number.

It is not a de Polignac number, because 25445224117 - 2¹⁹ = 25444699829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25445224127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12722612058 + 12722612059.

It is an arithmetic number, because the mean of its divisors is an integer number (12722612059).

Almost surely, 2^25445224117 is an apocalyptic number.

It is an amenable number.

25445224117 is a deficient number, since it is larger than the sum of its proper divisors (1).

25445224117 is an equidigital number, since it uses as much as digits as its factorization.

25445224117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 89600, while the sum is 37.

Adding to 25445224117 its reverse (71142254452), we get a palindrome (96587478569).

The spelling of 25445224117 in words is "twenty-five billion, four hundred forty-five million, two hundred twenty-four thousand, one hundred seventeen".