665224625615 has 8 divisors (see below), whose sum is σ = 870839509968. Its totient is φ = 483799727680.

The previous prime is 665224625567. The next prime is 665224625671. The reversal of 665224625615 is 516526422566.

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

It is not a de Polignac number, because 665224625615 - 2⁶ = 665224625551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6047496542 + ... + 6047496651.

It is an arithmetic number, because the mean of its divisors is an integer number (108854938746).

Almost surely, 2^665224625615 is an apocalyptic number.

665224625615 is a deficient number, since it is larger than the sum of its proper divisors (205614884353).

665224625615 is a wasteful number, since it uses less digits than its factorization.

665224625615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12094993209.

The product of its digits is 5184000, while the sum is 50.

The spelling of 665224625615 in words is "six hundred sixty-five billion, two hundred twenty-four million, six hundred twenty-five thousand, six hundred fifteen".