256332245 has 16 divisors (see below), whose sum is σ = 338967552. Its totient is φ = 184887360.

The previous prime is 256332229. The next prime is 256332253. The reversal of 256332245 is 542233652.

It is not a de Polignac number, because 256332245 - 2⁴ = 256332229 is a prime.

It is a Duffinian number.

It is a Curzon number.

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, 43061 + ... + 48650.

It is an arithmetic number, because the mean of its divisors is an integer number (21185472).

Almost surely, 2^256332245 is an apocalyptic number.

It is an amenable number.

256332245 is a deficient number, since it is larger than the sum of its proper divisors (82635307).

256332245 is a wasteful number, since it uses less digits than its factorization.

256332245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91772.

The product of its digits is 43200, while the sum is 32.

The square root of 256332245 is about 16010.3792896983. The cubic root of 256332245 is about 635.2349926963.

Adding to 256332245 its reverse (542233652), we get a palindrome (798565897).

The spelling of 256332245 in words is "two hundred fifty-six million, three hundred thirty-two thousand, two hundred forty-five".