256525064063 has 4 divisors (see below), whose sum is σ = 256757635488. Its totient is φ = 256292492640.

The previous prime is 256525064057. The next prime is 256525064069. The reversal of 256525064063 is 360460525652.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (256525064057) and next prime (256525064069).

It is a cyclic number.

It is not a de Polignac number, because 256525064063 - 2²⁴ = 256508286847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256525064069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116284058 + ... + 116286263.

It is an arithmetic number, because the mean of its divisors is an integer number (64189408872).

Almost surely, 2^256525064063 is an apocalyptic number.

256525064063 is a deficient number, since it is larger than the sum of its proper divisors (232571425).

256525064063 is a wasteful number, since it uses less digits than its factorization.

256525064063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232571424.

The product of its (nonzero) digits is 1296000, while the sum is 44.

The spelling of 256525064063 in words is "two hundred fifty-six billion, five hundred twenty-five million, sixty-four thousand, sixty-three".