25607213 has 2 divisors, whose sum is σ = 25607214. Its totient is φ = 25607212.

The previous prime is 25607207. The next prime is 25607221. The reversal of 25607213 is 31270652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19909444 + 5697769 = 4462^2 + 2387^2 .

It is a cyclic number.

It is not a de Polignac number, because 25607213 - 2⁶ = 25607149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25607233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12803606 + 12803607.

It is an arithmetic number, because the mean of its divisors is an integer number (12803607).

Almost surely, 2^25607213 is an apocalyptic number.

It is an amenable number.

25607213 is a deficient number, since it is larger than the sum of its proper divisors (1).

25607213 is an equidigital number, since it uses as much as digits as its factorization.

25607213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 25607213 is about 5060.3570032163. The cubic root of 25607213 is about 294.7501974161.

Adding to 25607213 its reverse (31270652), we get a palindrome (56877865).

The spelling of 25607213 in words is "twenty-five million, six hundred seven thousand, two hundred thirteen".