25160813 has 2 divisors, whose sum is σ = 25160814. Its totient is φ = 25160812.

The previous prime is 25160803. The next prime is 25160819. The reversal of 25160813 is 31806152.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22108804 + 3052009 = 4702^2 + 1747^2 .

It is a cyclic number.

It is not a de Polignac number, because 25160813 - 2⁶ = 25160749 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25160819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12580406 + 12580407.

It is an arithmetic number, because the mean of its divisors is an integer number (12580407).

Almost surely, 2^25160813 is an apocalyptic number.

It is an amenable number.

25160813 is a deficient number, since it is larger than the sum of its proper divisors (1).

25160813 is an equidigital number, since it uses as much as digits as its factorization.

25160813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 25160813 is about 5016.0555220213. The cubic root of 25160813 is about 293.0273943798.

Adding to 25160813 its reverse (31806152), we get a palindrome (56966965).

The spelling of 25160813 in words is "twenty-five million, one hundred sixty thousand, eight hundred thirteen".