25472421137 has 2 divisors, whose sum is σ = 25472421138. Its totient is φ = 25472421136.

The previous prime is 25472421113. The next prime is 25472421151. The reversal of 25472421137 is 73112427452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23056600336 + 2415820801 = 151844^2 + 49151^2 .

It is a cyclic number.

It is not a de Polignac number, because 25472421137 - 2⁸ = 25472420881 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25472421137.

It is not a weakly prime, because it can be changed into another prime (25472421167) 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, 12736210568 + 12736210569.

It is an arithmetic number, because the mean of its divisors is an integer number (12736210569).

Almost surely, 2^25472421137 is an apocalyptic number.

It is an amenable number.

25472421137 is a deficient number, since it is larger than the sum of its proper divisors (1).

25472421137 is an equidigital number, since it uses as much as digits as its factorization.

25472421137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 94080, while the sum is 38.

Adding to 25472421137 its reverse (73112427452), we get a palindrome (98584848589).

The spelling of 25472421137 in words is "twenty-five billion, four hundred seventy-two million, four hundred twenty-one thousand, one hundred thirty-seven".