4251085565 has 16 divisors (see below), whose sum is σ = 5267856000. Its totient is φ = 3291285312.

The previous prime is 4251085541. The next prime is 4251085567. The reversal of 4251085565 is 5655801524.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4251085565 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4251085567) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67265 + ... + 114134.

It is an arithmetic number, because the mean of its divisors is an integer number (329241000).

Almost surely, 2^4251085565 is an apocalyptic number.

It is an amenable number.

4251085565 is a deficient number, since it is larger than the sum of its proper divisors (1016770435).

4251085565 is a wasteful number, since it uses less digits than its factorization.

4251085565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181556.

The product of its (nonzero) digits is 240000, while the sum is 41.

The square root of 4251085565 is about 65200.3494239103. The cubic root of 4251085565 is about 1619.9438029838.

The spelling of 4251085565 in words is "four billion, two hundred fifty-one million, eighty-five thousand, five hundred sixty-five".