25042613 has 2 divisors, whose sum is σ = 25042614. Its totient is φ = 25042612.

The previous prime is 25042603. The next prime is 25042621. The reversal of 25042613 is 31624052.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16144324 + 8898289 = 4018^2 + 2983^2 .

It is a cyclic number.

It is not a de Polignac number, because 25042613 - 2¹⁰ = 25041589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25042603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12521306 + 12521307.

It is an arithmetic number, because the mean of its divisors is an integer number (12521307).

Almost surely, 2^25042613 is an apocalyptic number.

It is an amenable number.

25042613 is a deficient number, since it is larger than the sum of its proper divisors (1).

25042613 is an equidigital number, since it uses as much as digits as its factorization.

25042613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 25042613 is about 5004.2594856782. The cubic root of 25042613 is about 292.5678144077.

Adding to 25042613 its reverse (31624052), we get a palindrome (56666665).

The spelling of 25042613 in words is "twenty-five million, forty-two thousand, six hundred thirteen".