4258520865 has 32 divisors (see below), whose sum is σ = 7573856640. Its totient is φ = 2270265408.

The previous prime is 4258520813. The next prime is 4258520879. The reversal of 4258520865 is 5680258524.

It is a happy number.

4258520865 is a `hidden beast` number, since 4 + 2 + 585 + 2 + 0 + 8 + 65 = 666.

It is not a de Polignac number, because 4258520865 - 2⁹ = 4258520353 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 4258520865.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 422019 + ... + 431991.

It is an arithmetic number, because the mean of its divisors is an integer number (236683020).

Almost surely, 2^4258520865 is an apocalyptic number.

4258520865 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4258520865 is a deficient number, since it is larger than the sum of its proper divisors (3315335775).

4258520865 is a wasteful number, since it uses less digits than its factorization.

4258520865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13150 (or 13144 counting only the distinct ones).

The product of its (nonzero) digits is 768000, while the sum is 45.

The square root of 4258520865 is about 65257.3433798833. The cubic root of 4258520865 is about 1620.8876993562.

The spelling of 4258520865 in words is "four billion, two hundred fifty-eight million, five hundred twenty thousand, eight hundred sixty-five".