256015427 has 8 divisors (see below), whose sum is σ = 271335600. Its totient is φ = 240724224.

The previous prime is 256015423. The next prime is 256015429. The reversal of 256015427 is 724510652.

256015427 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 256015427 - 2² = 256015423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 256015393 and 256015402.

It is not an unprimeable number, because it can be changed into a prime (256015423) 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, 12524 + ... + 25862.

It is an arithmetic number, because the mean of its divisors is an integer number (33916950).

Almost surely, 2^256015427 is an apocalyptic number.

256015427 is a deficient number, since it is larger than the sum of its proper divisors (15320173).

256015427 is a wasteful number, since it uses less digits than its factorization.

256015427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14485.

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 256015427 is about 16000.4820864873. The cubic root of 256015427 is about 634.9731751332.

The spelling of 256015427 in words is "two hundred fifty-six million, fifteen thousand, four hundred twenty-seven".