256505590214 has 16 divisors (see below), whose sum is σ = 386038623552. Its totient is φ = 127826157888.

The previous prime is 256505590189. The next prime is 256505590219. The reversal of 256505590214 is 412095505652.

It is a super-4 number, since 4×256505590214⁴ (a number of 47 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256505590219) 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, 5675972 + ... + 5720984.

It is an arithmetic number, because the mean of its divisors is an integer number (24127413972).

Almost surely, 2^256505590214 is an apocalyptic number.

256505590214 is a deficient number, since it is larger than the sum of its proper divisors (129533033338).

256505590214 is a wasteful number, since it uses less digits than its factorization.

256505590214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54431.

The product of its (nonzero) digits is 540000, while the sum is 44.

The spelling of 256505590214 in words is "two hundred fifty-six billion, five hundred five million, five hundred ninety thousand, two hundred fourteen".