256151465 has 8 divisors (see below), whose sum is σ = 307540800. Its totient is φ = 204815152.

The previous prime is 256151459. The next prime is 256151471. The reversal of 256151465 is 564151652.

It is an interprime number because it is at equal distance from previous prime (256151459) and next prime (256151471).

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

It is a cyclic number.

It is not a de Polignac number, because 256151465 - 2⁴ = 256151449 is a prime.

It is a super-2 number, since 2×256151465² = 131227146043292450, which contains 22 as substring.

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, 1709 + ... + 22698.

It is an arithmetic number, because the mean of its divisors is an integer number (38442600).

Almost surely, 2^256151465 is an apocalyptic number.

It is an amenable number.

256151465 is a deficient number, since it is larger than the sum of its proper divisors (51389335).

256151465 is a wasteful number, since it uses less digits than its factorization.

256151465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26511.

The product of its digits is 36000, while the sum is 35.

The square root of 256151465 is about 16004.7325813336. The cubic root of 256151465 is about 635.0856230254.

The spelling of 256151465 in words is "two hundred fifty-six million, one hundred fifty-one thousand, four hundred sixty-five".