25347613 has 2 divisors, whose sum is σ = 25347614. Its totient is φ = 25347612.

The previous prime is 25347599. The next prime is 25347631. The reversal of 25347613 is 31674352.

Together with next prime (25347631) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24176889 + 1170724 = 4917^2 + 1082^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25347613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25347643) 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, 12673806 + 12673807.

It is an arithmetic number, because the mean of its divisors is an integer number (12673807).

Almost surely, 2^25347613 is an apocalyptic number.

It is an amenable number.

25347613 is a deficient number, since it is larger than the sum of its proper divisors (1).

25347613 is an equidigital number, since it uses as much as digits as its factorization.

25347613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 31.

The square root of 25347613 is about 5034.6412980470. The cubic root of 25347613 is about 293.7507760354.

The spelling of 25347613 in words is "twenty-five million, three hundred forty-seven thousand, six hundred thirteen".