25160257 has 2 divisors, whose sum is σ = 25160258. Its totient is φ = 25160256.

The previous prime is 25160227. The next prime is 25160263. The reversal of 25160257 is 75206152.

It is a Cunningham number, because it is equal to 5016²+1.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25160256 + 1 = 5016^2 + 1^2 .

It is a cyclic number.

It is not a de Polignac number, because 25160257 - 2¹⁵ = 25127489 is a prime.

It is not a weakly prime, because it can be changed into another prime (25160227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12580128 + 12580129.

It is an arithmetic number, because the mean of its divisors is an integer number (12580129).

Almost surely, 2^25160257 is an apocalyptic number.

It is an amenable number.

25160257 is a deficient number, since it is larger than the sum of its proper divisors (1).

25160257 is an equidigital number, since it uses as much as digits as its factorization.

25160257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 25160257 is about 5016.0000996810. Note that the first 4 decimals coincide. The cubic root of 25160257 is about 293.0252359383.

The spelling of 25160257 in words is "twenty-five million, one hundred sixty thousand, two hundred fifty-seven".