25685713 has 2 divisors, whose sum is σ = 25685714. Its totient is φ = 25685712.

The previous prime is 25685633. The next prime is 25685717. The reversal of 25685713 is 31758652.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25684624 + 1089 = 5068^2 + 33^2 .

It is a cyclic number.

It is not a de Polignac number, because 25685713 - 2⁹ = 25685201 is a prime.

It is not a weakly prime, because it can be changed into another prime (25685717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12842856 + 12842857.

It is an arithmetic number, because the mean of its divisors is an integer number (12842857).

Almost surely, 2^25685713 is an apocalyptic number.

It is an amenable number.

25685713 is a deficient number, since it is larger than the sum of its proper divisors (1).

25685713 is an equidigital number, since it uses as much as digits as its factorization.

25685713 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 50400, while the sum is 37.

The square root of 25685713 is about 5068.1074376931. The cubic root of 25685713 is about 295.0510799225.

It can be divided in two parts, 2568 and 5713, that added together give a square (8281 = 91²).

The spelling of 25685713 in words is "twenty-five million, six hundred eighty-five thousand, seven hundred thirteen".