256362145 has 8 divisors (see below), whose sum is σ = 331298856. Its totient is φ = 189313536.

The previous prime is 256362137. The next prime is 256362149. The reversal of 256362145 is 541263652.

It can be written as a sum of positive squares in 4 ways, for example, as 13220496 + 243141649 = 3636^2 + 15593^2 .

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 256362145 - 2³ = 256362137 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 256362145.

It is not an unprimeable number, because it can be changed into a prime (256362149) 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, 1971952 + ... + 1972081.

It is an arithmetic number, because the mean of its divisors is an integer number (41412357).

Almost surely, 2^256362145 is an apocalyptic number.

It is an amenable number.

256362145 is a deficient number, since it is larger than the sum of its proper divisors (74936711).

256362145 is a wasteful number, since it uses less digits than its factorization.

256362145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3944051.

The product of its digits is 43200, while the sum is 34.

The square root of 256362145 is about 16011.3130317285. The cubic root of 256362145 is about 635.2596908348.

The spelling of 256362145 in words is "two hundred fifty-six million, three hundred sixty-two thousand, one hundred forty-five".