864525413 has 2 divisors, whose sum is σ = 864525414. Its totient is φ = 864525412.

The previous prime is 864525397. The next prime is 864525421. The reversal of 864525413 is 314525468.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 594481924 + 270043489 = 24382^2 + 16433^2 .

It is a cyclic number.

It is not a de Polignac number, because 864525413 - 2⁴ = 864525397 is a prime.

It is equal to p_44287814 and since 864525413 and 44287814 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (864525113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432262706 + 432262707.

It is an arithmetic number, because the mean of its divisors is an integer number (432262707).

Almost surely, 2^864525413 is an apocalyptic number.

It is an amenable number.

864525413 is a deficient number, since it is larger than the sum of its proper divisors (1).

864525413 is an equidigital number, since it uses as much as digits as its factorization.

864525413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 115200, while the sum is 38.

The square root of 864525413 is about 29402.8130116831. The cubic root of 864525413 is about 952.6336571395.

Subtracting from 864525413 its reverse (314525468), we obtain a palindrome (549999945).

The spelling of 864525413 in words is "eight hundred sixty-four million, five hundred twenty-five thousand, four hundred thirteen".