256705250119 has 4 divisors (see below), whose sum is σ = 258405285040. Its totient is φ = 255005215200.

The previous prime is 256705250111. The next prime is 256705250147. The reversal of 256705250119 is 911052507652.

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

It is a cyclic number.

It is not a de Polignac number, because 256705250119 - 2³ = 256705250111 is a prime.

It is a super-2 number, since 2×256705250119² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256705250111) 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, 850017234 + ... + 850017535.

It is an arithmetic number, because the mean of its divisors is an integer number (64601321260).

Almost surely, 2^256705250119 is an apocalyptic number.

256705250119 is a deficient number, since it is larger than the sum of its proper divisors (1700034921).

256705250119 is a wasteful number, since it uses less digits than its factorization.

256705250119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1700034920.

The product of its (nonzero) digits is 189000, while the sum is 43.

The spelling of 256705250119 in words is "two hundred fifty-six billion, seven hundred five million, two hundred fifty thousand, one hundred nineteen".