855725387 has 8 divisors (see below), whose sum is σ = 939247680. Its totient is φ = 773157960.

The previous prime is 855725371. The next prime is 855725389. The reversal of 855725387 is 783527558.

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 855725387 - 2⁴ = 855725371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (855725389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 236837 + ... + 240422.

It is an arithmetic number, because the mean of its divisors is an integer number (117405960).

Almost surely, 2^855725387 is an apocalyptic number.

855725387 is a deficient number, since it is larger than the sum of its proper divisors (83522293).

855725387 is a wasteful number, since it uses less digits than its factorization.

855725387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477433.

The product of its digits is 2352000, while the sum is 50.

The square root of 855725387 is about 29252.7842606477. The cubic root of 855725387 is about 949.3903334814.

The spelling of 855725387 in words is "eight hundred fifty-five million, seven hundred twenty-five thousand, three hundred eighty-seven".