665065500025 has 12 divisors (see below), whose sum is σ = 826928319232. Its totient is φ = 530602658640.

The previous prime is 665065500019. The next prime is 665065500053. The reversal of 665065500025 is 520005560566.

It is not a de Polignac number, because 665065500025 - 2⁵ = 665065499993 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36234177 + ... + 36252526.

Almost surely, 2^665065500025 is an apocalyptic number.

It is an amenable number.

665065500025 is a deficient number, since it is larger than the sum of its proper divisors (161862819207).

665065500025 is a wasteful number, since it uses less digits than its factorization.

665065500025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72487080 (or 72487075 counting only the distinct ones).

The product of its (nonzero) digits is 270000, while the sum is 40.

The spelling of 665065500025 in words is "six hundred sixty-five billion, sixty-five million, five hundred thousand, twenty-five".