256148611 has 2 divisors, whose sum is σ = 256148612. Its totient is φ = 256148610.

The previous prime is 256148551. The next prime is 256148701. The reversal of 256148611 is 116841652.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 256148611 - 2¹¹ = 256146563 is a prime.

It is a super-2 number, since 2×256148611² = 131224221834458642, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (256148411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128074305 + 128074306.

It is an arithmetic number, because the mean of its divisors is an integer number (128074306).

Almost surely, 2^256148611 is an apocalyptic number.

256148611 is a deficient number, since it is larger than the sum of its proper divisors (1).

256148611 is an equidigital number, since it uses as much as digits as its factorization.

256148611 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11520, while the sum is 34.

The square root of 256148611 is about 16004.6434199578. The cubic root of 256148611 is about 635.0832643414.

It can be divided in two parts, 25614 and 8611, that added together give a square (34225 = 185²).

The spelling of 256148611 in words is "two hundred fifty-six million, one hundred forty-eight thousand, six hundred eleven".