256145704574 has 8 divisors (see below), whose sum is σ = 384225536448. Its totient is φ = 128070525760.

The previous prime is 256145704561. The next prime is 256145704583. The reversal of 256145704574 is 475407541652.

It is a happy number.

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

It is a super-2 number, since 2×256145704574² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1022222 + ... + 1247889.

It is an arithmetic number, because the mean of its divisors is an integer number (48028192056).

Almost surely, 2^256145704574 is an apocalyptic number.

256145704574 is a deficient number, since it is larger than the sum of its proper divisors (128079831874).

256145704574 is a wasteful number, since it uses less digits than its factorization.

256145704574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2326530.

The product of its (nonzero) digits is 4704000, while the sum is 50.

The spelling of 256145704574 in words is "two hundred fifty-six billion, one hundred forty-five million, seven hundred four thousand, five hundred seventy-four".