256334465 has 8 divisors (see below), whose sum is σ = 310647528. Its totient is φ = 203036800.

The previous prime is 256334423. The next prime is 256334467. The reversal of 256334465 is 564433652.

It is a happy number.

256334465 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 153190129 + 103144336 = 12377^2 + 10156^2 .

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

It is not a de Polignac number, because 256334465 - 2⁶ = 256334401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256334467) 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, 253292 + ... + 254301.

It is an arithmetic number, because the mean of its divisors is an integer number (38830941).

Almost surely, 2^256334465 is an apocalyptic number.

It is an amenable number.

256334465 is a deficient number, since it is larger than the sum of its proper divisors (54313063).

256334465 is a wasteful number, since it uses less digits than its factorization.

256334465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507699.

The product of its digits is 259200, while the sum is 38.

The square root of 256334465 is about 16010.4486195734. The cubic root of 256334465 is about 635.2368265372.

The spelling of 256334465 in words is "two hundred fifty-six million, three hundred thirty-four thousand, four hundred sixty-five".