25324425613 has 2 divisors, whose sum is σ = 25324425614. Its totient is φ = 25324425612.

The previous prime is 25324425601. The next prime is 25324425661. The reversal of 25324425613 is 31652442352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18715060809 + 6609364804 = 136803^2 + 81298^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25324425613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25324425913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12662212806 + 12662212807.

It is an arithmetic number, because the mean of its divisors is an integer number (12662212807).

Almost surely, 2^25324425613 is an apocalyptic number.

It is an amenable number.

25324425613 is a deficient number, since it is larger than the sum of its proper divisors (1).

25324425613 is an equidigital number, since it uses as much as digits as its factorization.

25324425613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 172800, while the sum is 37.

Adding to 25324425613 its reverse (31652442352), we get a palindrome (56976867965).

The spelling of 25324425613 in words is "twenty-five billion, three hundred twenty-four million, four hundred twenty-five thousand, six hundred thirteen".