256425004 has 24 divisors (see below), whose sum is σ = 490770000. Its totient is φ = 116263680.

The previous prime is 256424941. The next prime is 256425017. The reversal of 256425004 is 400524652.

256425004 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10872 + ... + 25120.

It is an arithmetic number, because the mean of its divisors is an integer number (20448750).

Almost surely, 2^256425004 is an apocalyptic number.

It is an amenable number.

256425004 is a deficient number, since it is larger than the sum of its proper divisors (234344996).

256425004 is a wasteful number, since it uses less digits than its factorization.

256425004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14673 (or 14671 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 256425004 is about 16013.2758672297. The cubic root of 256425004 is about 635.3116076595.

Adding to 256425004 its reverse (400524652), we get a palindrome (656949656).

The spelling of 256425004 in words is "two hundred fifty-six million, four hundred twenty-five thousand, four".