256030378125 has 24 divisors (see below), whose sum is σ = 426690002592. Its totient is φ = 136549530000.

The previous prime is 256030378081. The next prime is 256030378151. The reversal of 256030378125 is 521873030652.

It is a happy number.

256030378125 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-256030378125 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13645579 + ... + 13664328.

It is an arithmetic number, because the mean of its divisors is an integer number (17778750108).

Almost surely, 2^256030378125 is an apocalyptic number.

256030378125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

256030378125 is a deficient number, since it is larger than the sum of its proper divisors (170659624467).

256030378125 is an frugal number, since it uses more digits than its factorization.

256030378125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27309935 (or 27309915 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 42.

The spelling of 256030378125 in words is "two hundred fifty-six billion, thirty million, three hundred seventy-eight thousand, one hundred twenty-five".