3856527425 has 18 divisors (see below), whose sum is σ = 4886075478. Its totient is φ = 3019535680.

The previous prime is 3856527407. The next prime is 3856527431. The reversal of 3856527425 is 5247256583.

It can be written as a sum of positive squares in 3 ways, for example, as 1731856 + 3854795569 = 1316^2 + 62087^2 .

It is a de Polignac number, because none of the positive numbers 2^k-3856527425 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3856527425.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 20309 + ... + 90141.

Almost surely, 2^3856527425 is an apocalyptic number.

It is an amenable number.

3856527425 is a deficient number, since it is larger than the sum of its proper divisors (1029548053).

3856527425 is an equidigital number, since it uses as much as digits as its factorization.

3856527425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69937 (or 69885 counting only the distinct ones).

The product of its digits is 2016000, while the sum is 47.

The square root of 3856527425 is about 62100.9454436887. The cubic root of 3856527425 is about 1568.1904618670.

The spelling of 3856527425 in words is "three billion, eight hundred fifty-six million, five hundred twenty-seven thousand, four hundred twenty-five".