25389131 has 2 divisors, whose sum is σ = 25389132. Its totient is φ = 25389130.

The previous prime is 25389113. The next prime is 25389137. The reversal of 25389131 is 13198352.

Together with previous prime (25389113) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25389131 is a prime.

It is a super-2 number, since 2×25389131² = 1289215945870322, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (25389137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12694565 + 12694566.

It is an arithmetic number, because the mean of its divisors is an integer number (12694566).

Almost surely, 2^25389131 is an apocalyptic number.

25389131 is a deficient number, since it is larger than the sum of its proper divisors (1).

25389131 is an equidigital number, since it uses as much as digits as its factorization.

25389131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6480, while the sum is 32.

The square root of 25389131 is about 5038.7628441910. The cubic root of 25389131 is about 293.9110711029.

The spelling of 25389131 in words is "twenty-five million, three hundred eighty-nine thousand, one hundred thirty-one".