256401530301 has 16 divisors (see below), whose sum is σ = 400236536448. Its totient is φ = 142941619200.

The previous prime is 256401530261. The next prime is 256401530311. The reversal of 256401530301 is 103035104652.

It is not a de Polignac number, because 256401530301 - 2³³ = 247811595709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256401530311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 148896660 + ... + 148898381.

It is an arithmetic number, because the mean of its divisors is an integer number (25014783528).

Almost surely, 2^256401530301 is an apocalyptic number.

256401530301 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

256401530301 is a deficient number, since it is larger than the sum of its proper divisors (143835006147).

256401530301 is a wasteful number, since it uses less digits than its factorization.

256401530301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297795092.

The product of its (nonzero) digits is 10800, while the sum is 30.

Adding to 256401530301 its reverse (103035104652), we get a palindrome (359436634953).

The spelling of 256401530301 in words is "two hundred fifty-six billion, four hundred one million, five hundred thirty thousand, three hundred one".