256037465 has 8 divisors (see below), whose sum is σ = 307977288. Its totient is φ = 204341760.

The previous prime is 256037423. The next prime is 256037473. The reversal of 256037465 is 564730652.

256037465 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 20967241 + 235070224 = 4579^2 + 15332^2 .

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

It is not a de Polignac number, because 256037465 - 2⁸ = 256037209 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58712 + ... + 62921.

It is an arithmetic number, because the mean of its divisors is an integer number (38497161).

Almost surely, 2^256037465 is an apocalyptic number.

It is an amenable number.

256037465 is a deficient number, since it is larger than the sum of its proper divisors (51939823).

256037465 is a wasteful number, since it uses less digits than its factorization.

256037465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122059.

The product of its (nonzero) digits is 151200, while the sum is 38.

The square root of 256037465 is about 16001.1707384179. The cubic root of 256037465 is about 634.9913942662.

It can be divided in two parts, 25 and 6037465, that multiplied together give a triangular number (150936625 = T₁₇₃₇₄).

The spelling of 256037465 in words is "two hundred fifty-six million, thirty-seven thousand, four hundred sixty-five".