25610213 has 2 divisors, whose sum is σ = 25610214. Its totient is φ = 25610212.

The previous prime is 25610209. The next prime is 25610237. The reversal of 25610213 is 31201652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14002564 + 11607649 = 3742^2 + 3407^2 .

It is a cyclic number.

It is not a de Polignac number, because 25610213 - 2² = 25610209 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25619213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12805106 + 12805107.

It is an arithmetic number, because the mean of its divisors is an integer number (12805107).

Almost surely, 2^25610213 is an apocalyptic number.

It is an amenable number.

25610213 is a deficient number, since it is larger than the sum of its proper divisors (1).

25610213 is an equidigital number, since it uses as much as digits as its factorization.

25610213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 25610213 is about 5060.6534163090. The cubic root of 25610213 is about 294.7617074031.

Adding to 25610213 its reverse (31201652), we get a palindrome (56811865).

The spelling of 25610213 in words is "twenty-five million, six hundred ten thousand, two hundred thirteen".