256612245 has 16 divisors (see below), whose sum is σ = 419316480. Its totient is φ = 133947584.

The previous prime is 256612241. The next prime is 256612249. The reversal of 256612245 is 542216652.

It is an interprime number because it is at equal distance from previous prime (256612241) and next prime (256612249).

It is a cyclic number.

It is not a de Polignac number, because 256612245 - 2² = 256612241 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256612241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 181290 + ... + 182699.

It is an arithmetic number, because the mean of its divisors is an integer number (26207280).

Almost surely, 2^256612245 is an apocalyptic number.

It is an amenable number.

256612245 is a deficient number, since it is larger than the sum of its proper divisors (162704235).

256612245 is a wasteful number, since it uses less digits than its factorization.

256612245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364044.

The product of its digits is 28800, while the sum is 33.

The square root of 256612245 is about 16019.1212305794. The cubic root of 256612245 is about 635.4662044379.

Adding to 256612245 its reverse (542216652), we get a palindrome (798828897).

The spelling of 256612245 in words is "two hundred fifty-six million, six hundred twelve thousand, two hundred forty-five".