256100025829 has 2 divisors, whose sum is σ = 256100025830. Its totient is φ = 256100025828.

The previous prime is 256100025773. The next prime is 256100025893. The reversal of 256100025829 is 928520001652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 191226917025 + 64873108804 = 437295^2 + 254702^2 .

It is a cyclic number.

It is not a de Polignac number, because 256100025829 - 2¹³ = 256100017637 is a prime.

It is a super-2 number, since 2×256100025829² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 256100025791 and 256100025800.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256100025329) by changing a digit.

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 as a sum of consecutive naturals, namely, 128050012914 + 128050012915.

It is an arithmetic number, because the mean of its divisors is an integer number (128050012915).

Almost surely, 2^256100025829 is an apocalyptic number.

It is an amenable number.

256100025829 is a deficient number, since it is larger than the sum of its proper divisors (1).

256100025829 is an equidigital number, since it uses as much as digits as its factorization.

256100025829 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 86400, while the sum is 40.

The spelling of 256100025829 in words is "two hundred fifty-six billion, one hundred million, twenty-five thousand, eight hundred twenty-nine".