665025434241 has 8 divisors (see below), whose sum is σ = 1013372090304. Its totient is φ = 380014533840.

The previous prime is 665025434231. The next prime is 665025434251. The reversal of 665025434241 is 142434520566.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (665025434231) and next prime (665025434251).

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

It is not a de Polignac number, because 665025434241 - 2¹⁰ = 665025433217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 665025434193 and 665025434202.

It is not an unprimeable number, because it can be changed into a prime (665025434201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15833938890 + ... + 15833938931.

It is an arithmetic number, because the mean of its divisors is an integer number (126671511288).

Almost surely, 2^665025434241 is an apocalyptic number.

It is an amenable number.

665025434241 is a deficient number, since it is larger than the sum of its proper divisors (348346656063).

665025434241 is a wasteful number, since it uses less digits than its factorization.

665025434241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31667877831.

The product of its (nonzero) digits is 691200, while the sum is 42.

The spelling of 665025434241 in words is "six hundred sixty-five billion, twenty-five million, four hundred thirty-four thousand, two hundred forty-one".