856625412 has 48 divisors (see below), whose sum is σ = 2107607040. Its totient is φ = 270048672.

The previous prime is 856625411. The next prime is 856625509. The reversal of 856625412 is 214526658.

It is not an unprimeable number, because it can be changed into a prime (856625411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144613 + ... + 150419.

It is an arithmetic number, because the mean of its divisors is an integer number (43908480).

Almost surely, 2^856625412 is an apocalyptic number.

It is an amenable number.

856625412 is an abundant number, since it is smaller than the sum of its proper divisors (1250981628).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

856625412 is a wasteful number, since it uses less digits than its factorization.

856625412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6480 (or 6478 counting only the distinct ones).

The product of its digits is 115200, while the sum is 39.

The square root of 856625412 is about 29268.1637961796. The cubic root of 856625412 is about 949.7230631369.

The spelling of 856625412 in words is "eight hundred fifty-six million, six hundred twenty-five thousand, four hundred twelve".