64825585 has 32 divisors (see below), whose sum is σ = 88905600. Its totient is φ = 44943360.

The previous prime is 64825547. The next prime is 64825597. The reversal of 64825585 is 58552846.

It is a de Polignac number, because none of the positive numbers 2^k-64825585 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 154506 + ... + 154924.

It is an arithmetic number, because the mean of its divisors is an integer number (2778300).

Almost surely, 2^64825585 is an apocalyptic number.

It is an amenable number.

64825585 is a deficient number, since it is larger than the sum of its proper divisors (24080015).

64825585 is a wasteful number, since it uses less digits than its factorization.

64825585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561.

The product of its digits is 384000, while the sum is 43.

The square root of 64825585 is about 8051.4337232570. The cubic root of 64825585 is about 401.7126255690.

The spelling of 64825585 in words is "sixty-four million, eight hundred twenty-five thousand, five hundred eighty-five".