864525457 has 2 divisors, whose sum is σ = 864525458. Its totient is φ = 864525456.

The previous prime is 864525437. The next prime is 864525481. The reversal of 864525457 is 754525468.

864525457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 543076416 + 321449041 = 23304^2 + 17929^2 .

It is a cyclic number.

It is not a de Polignac number, because 864525457 - 2¹⁹ = 864001169 is a prime.

It is not a weakly prime, because it can be changed into another prime (864525437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432262728 + 432262729.

It is an arithmetic number, because the mean of its divisors is an integer number (432262729).

Almost surely, 2^864525457 is an apocalyptic number.

It is an amenable number.

864525457 is a deficient number, since it is larger than the sum of its proper divisors (1).

864525457 is an equidigital number, since it uses as much as digits as its factorization.

864525457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1344000, while the sum is 46.

The square root of 864525457 is about 29402.8137599108. The cubic root of 864525457 is about 952.6336733009.

The spelling of 864525457 in words is "eight hundred sixty-four million, five hundred twenty-five thousand, four hundred fifty-seven".