64259422585 has 4 divisors (see below), whose sum is σ = 77111307108. Its totient is φ = 51407538064.

The previous prime is 64259422573. The next prime is 64259422621. The reversal of 64259422585 is 58522495246.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 48809181184 + 15450241401 = 220928^2 + 124299^2 .

It is a cyclic number.

It is not a de Polignac number, because 64259422585 - 2³¹ = 62111938937 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6425942254 + ... + 6425942263.

It is an arithmetic number, because the mean of its divisors is an integer number (19277826777).

Almost surely, 2^64259422585 is an apocalyptic number.

It is an amenable number.

64259422585 is a deficient number, since it is larger than the sum of its proper divisors (12851884523).

64259422585 is a wasteful number, since it uses less digits than its factorization.

64259422585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12851884522.

The product of its digits is 6912000, while the sum is 52.

The spelling of 64259422585 in words is "sixty-four billion, two hundred fifty-nine million, four hundred twenty-two thousand, five hundred eighty-five".