425168861 has 8 divisors (see below), whose sum is σ = 484808184. Its totient is φ = 369377280.

The previous prime is 425168851. The next prime is 425168867. The reversal of 425168861 is 168861524.

It can be written as a sum of positive squares in 4 ways, for example, as 14295961 + 410872900 = 3781^2 + 20270^2 .

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 425168861 - 2¹⁰ = 425167837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425168867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 961700 + ... + 962141.

It is an arithmetic number, because the mean of its divisors is an integer number (60601023).

Almost surely, 2^425168861 is an apocalyptic number.

It is an amenable number.

425168861 is a deficient number, since it is larger than the sum of its proper divisors (59639323).

425168861 is a wasteful number, since it uses less digits than its factorization.

425168861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1923871.

The product of its digits is 92160, while the sum is 41.

The square root of 425168861 is about 20619.6232021829. The cubic root of 425168861 is about 751.9468595739.

The spelling of 425168861 in words is "four hundred twenty-five million, one hundred sixty-eight thousand, eight hundred sixty-one".