25208213 has 2 divisors, whose sum is σ = 25208214. Its totient is φ = 25208212.

The previous prime is 25208201. The next prime is 25208219. The reversal of 25208213 is 31280252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25180324 + 27889 = 5018^2 + 167^2 .

It is a cyclic number.

It is not a de Polignac number, because 25208213 - 2¹² = 25204117 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 (25208219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12604106 + 12604107.

It is an arithmetic number, because the mean of its divisors is an integer number (12604107).

Almost surely, 2^25208213 is an apocalyptic number.

It is an amenable number.

25208213 is a deficient number, since it is larger than the sum of its proper divisors (1).

25208213 is an equidigital number, since it uses as much as digits as its factorization.

25208213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 25208213 is about 5020.7781269441. The cubic root of 25208213 is about 293.2112886171.

Adding to 25208213 its reverse (31280252), we get a palindrome (56488465).

The spelling of 25208213 in words is "twenty-five million, two hundred eight thousand, two hundred thirteen".