6425361865 has 8 divisors (see below), whose sum is σ = 8303544648. Its totient is φ = 4744882560.

The previous prime is 6425361851. The next prime is 6425361881. The reversal of 6425361865 is 5681635246.

It can be written as a sum of positive squares in 4 ways, for example, as 395373456 + 6029988409 = 19884^2 + 77653^2 .

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

It is not a de Polignac number, because 6425361865 - 2⁹ = 6425361353 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49425796 + ... + 49425925.

It is an arithmetic number, because the mean of its divisors is an integer number (1037943081).

Almost surely, 2^6425361865 is an apocalyptic number.

6425361865 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6425361865 is a deficient number, since it is larger than the sum of its proper divisors (1878182783).

6425361865 is a wasteful number, since it uses less digits than its factorization.

6425361865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98851739.

The product of its digits is 1036800, while the sum is 46.

The square root of 6425361865 is about 80158.3549294769. The cubic root of 6425361865 is about 1859.0847874398.

The spelling of 6425361865 in words is "six billion, four hundred twenty-five million, three hundred sixty-one thousand, eight hundred sixty-five".