64225083617 has 8 divisors (see below), whose sum is σ = 65589759720. Its totient is φ = 62874697600.

The previous prime is 64225083607. The next prime is 64225083619. The reversal of 64225083617 is 71638052246.

It can be written as a sum of positive squares in 4 ways, for example, as 17774489041 + 46450594576 = 133321^2 + 215524^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64225083617 - 2⁸ = 64225083361 is a prime.

It is a super-2 number, since 2×64225083617² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64225083619) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3563438 + ... + 3581415.

It is an arithmetic number, because the mean of its divisors is an integer number (8198719965).

Almost surely, 2^64225083617 is an apocalyptic number.

It is an amenable number.

64225083617 is a deficient number, since it is larger than the sum of its proper divisors (1364676103).

64225083617 is a wasteful number, since it uses less digits than its factorization.

64225083617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7145043.

The product of its (nonzero) digits is 483840, while the sum is 44.

The spelling of 64225083617 in words is "sixty-four billion, two hundred twenty-five million, eighty-three thousand, six hundred seventeen".