25124435131 has 2 divisors, whose sum is σ = 25124435132. Its totient is φ = 25124435130.

The previous prime is 25124435087. The next prime is 25124435249. The reversal of 25124435131 is 13153442152.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25124435131 - 2¹⁵ = 25124402363 is a prime.

It is a super-2 number, since 2×25124435131² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25124435093 and 25124435102.

It is not a weakly prime, because it can be changed into another prime (25124445131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12562217565 + 12562217566.

It is an arithmetic number, because the mean of its divisors is an integer number (12562217566).

Almost surely, 2^25124435131 is an apocalyptic number.

25124435131 is a deficient number, since it is larger than the sum of its proper divisors (1).

25124435131 is an equidigital number, since it uses as much as digits as its factorization.

25124435131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14400, while the sum is 31.

Adding to 25124435131 its reverse (13153442152), we get a palindrome (38277877283).

The spelling of 25124435131 in words is "twenty-five billion, one hundred twenty-four million, four hundred thirty-five thousand, one hundred thirty-one".