256425028292 has 24 divisors (see below), whose sum is σ = 450632397600. Its totient is φ = 127673231360.

The previous prime is 256425028291. The next prime is 256425028313. The reversal of 256425028292 is 292820524652.

It is a super-3 number, since 3×256425028292³ (a number of 35 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (256425028291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3353567 + ... + 3429177.

It is an arithmetic number, because the mean of its divisors is an integer number (18776349900).

Almost surely, 2^256425028292 is an apocalyptic number.

It is an amenable number.

256425028292 is a deficient number, since it is larger than the sum of its proper divisors (194207369308).

256425028292 is a wasteful number, since it uses less digits than its factorization.

256425028292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79171 (or 79169 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 47.

The spelling of 256425028292 in words is "two hundred fifty-six billion, four hundred twenty-five million, twenty-eight thousand, two hundred ninety-two".