65625107131 has 2 divisors, whose sum is σ = 65625107132. Its totient is φ = 65625107130.

The previous prime is 65625107111. The next prime is 65625107173. The reversal of 65625107131 is 13170152656.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65625107131 - 2⁵ = 65625107099 is a prime.

It is a super-2 number, since 2×65625107131² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (65625107111) 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, 32812553565 + 32812553566.

It is an arithmetic number, because the mean of its divisors is an integer number (32812553566).

Almost surely, 2^65625107131 is an apocalyptic number.

65625107131 is a deficient number, since it is larger than the sum of its proper divisors (1).

65625107131 is an equidigital number, since it uses as much as digits as its factorization.

65625107131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37800, while the sum is 37.

Adding to 65625107131 its reverse (13170152656), we get a palindrome (78795259787).

The spelling of 65625107131 in words is "sixty-five billion, six hundred twenty-five million, one hundred seven thousand, one hundred thirty-one".