25680313 has 2 divisors, whose sum is σ = 25680314. Its totient is φ = 25680312.

The previous prime is 25680287. The next prime is 25680337. The reversal of 25680313 is 31308652.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25522704 + 157609 = 5052^2 + 397^2 .

It is a cyclic number.

It is not a de Polignac number, because 25680313 - 2¹⁷ = 25549241 is a prime.

It is not a weakly prime, because it can be changed into another prime (25680373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12840156 + 12840157.

It is an arithmetic number, because the mean of its divisors is an integer number (12840157).

Almost surely, 2^25680313 is an apocalyptic number.

It is an amenable number.

25680313 is a deficient number, since it is larger than the sum of its proper divisors (1).

25680313 is an equidigital number, since it uses as much as digits as its factorization.

25680313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 25680313 is about 5067.5746664455. The cubic root of 25680313 is about 295.0304019228.

Adding to 25680313 its reverse (31308652), we get a palindrome (56988965).

The spelling of 25680313 in words is "twenty-five million, six hundred eighty thousand, three hundred thirteen".