25600261 has 2 divisors, whose sum is σ = 25600262. Its totient is φ = 25600260.

The previous prime is 25600217. The next prime is 25600273. The reversal of 25600261 is 16200652.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25060036 + 540225 = 5006^2 + 735^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25600261 is a prime.

It is a super-3 number, since 3×25600261³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25600061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12800130 + 12800131.

It is an arithmetic number, because the mean of its divisors is an integer number (12800131).

Almost surely, 2^25600261 is an apocalyptic number.

It is an amenable number.

25600261 is a deficient number, since it is larger than the sum of its proper divisors (1).

25600261 is an equidigital number, since it uses as much as digits as its factorization.

25600261 is an odious number, because the sum of its binary digits is odd.

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

The square root of 25600261 is about 5059.6700485308. The cubic root of 25600261 is about 294.7235214839.

The spelling of 25600261 in words is "twenty-five million, six hundred thousand, two hundred sixty-one".