265006985 has 8 divisors (see below), whose sum is σ = 325764936. Its totient is φ = 206834560.

The previous prime is 265006969. The next prime is 265006993. The reversal of 265006985 is 589600562.

It can be written as a sum of positive squares in 4 ways, for example, as 22052416 + 242954569 = 4696^2 + 15587^2 .

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

It is not a de Polignac number, because 265006985 - 2⁴ = 265006969 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian 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, 646154 + ... + 646563.

It is an arithmetic number, because the mean of its divisors is an integer number (40720617).

Almost surely, 2^265006985 is an apocalyptic number.

It is an amenable number.

265006985 is a deficient number, since it is larger than the sum of its proper divisors (60757951).

265006985 is a wasteful number, since it uses less digits than its factorization.

265006985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1292763.

The product of its (nonzero) digits is 129600, while the sum is 41.

The square root of 265006985 is about 16279.0351372555. The cubic root of 265006985 is about 642.3214722986.

The spelling of 265006985 in words is "two hundred sixty-five million, six thousand, nine hundred eighty-five".