256457365 has 16 divisors (see below), whose sum is σ = 313709760. Its totient is φ = 201208960.

The previous prime is 256457351. The next prime is 256457371. The reversal of 256457365 is 563754652.

It is not a de Polignac number, because 256457365 - 2¹¹ = 256455317 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 172425 + ... + 173905.

It is an arithmetic number, because the mean of its divisors is an integer number (19606860).

Almost surely, 2^256457365 is an apocalyptic number.

It is an amenable number.

256457365 is a deficient number, since it is larger than the sum of its proper divisors (57252395).

256457365 is a wasteful number, since it uses less digits than its factorization.

256457365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2132.

The product of its digits is 756000, while the sum is 43.

The square root of 256457365 is about 16014.2862781955. The cubic root of 256457365 is about 635.3383321128.

The spelling of 256457365 in words is "two hundred fifty-six million, four hundred fifty-seven thousand, three hundred sixty-five".