25606201 has 2 divisors, whose sum is σ = 25606202. Its totient is φ = 25606200.

The previous prime is 25606187. The next prime is 25606213. The reversal of 25606201 is 10260652.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25603600 + 2601 = 5060^2 + 51^2 .

It is a cyclic number.

It is not a de Polignac number, because 25606201 - 2¹⁹ = 25081913 is a prime.

It is not a weakly prime, because it can be changed into another prime (25606501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12803100 + 12803101.

It is an arithmetic number, because the mean of its divisors is an integer number (12803101).

Almost surely, 2^25606201 is an apocalyptic number.

It is an amenable number.

25606201 is a deficient number, since it is larger than the sum of its proper divisors (1).

25606201 is an equidigital number, since it uses as much as digits as its factorization.

25606201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 25606201 is about 5060.2570092832. The cubic root of 25606201 is about 294.7463145111.

Adding to 25606201 its reverse (10260652), we get a palindrome (35866853).

The spelling of 25606201 in words is "twenty-five million, six hundred six thousand, two hundred one".