4245221765 has 8 divisors (see below), whose sum is σ = 5095802880. Its totient is φ = 3395152912.

The previous prime is 4245221707. The next prime is 4245221789. The reversal of 4245221765 is 5671225424.

4245221765 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 4245221765 - 2¹⁰ = 4245220741 is a prime.

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, 109589 + ... + 143178.

It is an arithmetic number, because the mean of its divisors is an integer number (636975360).

Almost surely, 2^4245221765 is an apocalyptic number.

It is an amenable number.

4245221765 is a deficient number, since it is larger than the sum of its proper divisors (850581115).

4245221765 is a wasteful number, since it uses less digits than its factorization.

4245221765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256131.

The product of its digits is 134400, while the sum is 38.

The square root of 4245221765 is about 65155.3663561184. The cubic root of 4245221765 is about 1619.1986288222.

The spelling of 4245221765 in words is "four billion, two hundred forty-five million, two hundred twenty-one thousand, seven hundred sixty-five".