25026613 has 2 divisors, whose sum is σ = 25026614. Its totient is φ = 25026612.

The previous prime is 25026611. The next prime is 25026637. The reversal of 25026613 is 31662052.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14799409 + 10227204 = 3847^2 + 3198^2 .

It is a cyclic number.

It is not a de Polignac number, because 25026613 - 2¹ = 25026611 is a prime.

Together with 25026611, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25026611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12513306 + 12513307.

It is an arithmetic number, because the mean of its divisors is an integer number (12513307).

Almost surely, 2^25026613 is an apocalyptic number.

It is an amenable number.

25026613 is a deficient number, since it is larger than the sum of its proper divisors (1).

25026613 is an equidigital number, since it uses as much as digits as its factorization.

25026613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 25026613 is about 5002.6605921250. The cubic root of 25026613 is about 292.5054928717.

Adding to 25026613 its reverse (31662052), we get a palindrome (56688665).

The spelling of 25026613 in words is "twenty-five million, twenty-six thousand, six hundred thirteen".