256152899 has 2 divisors, whose sum is σ = 256152900. Its totient is φ = 256152898.

The previous prime is 256152893. The next prime is 256152913. The reversal of 256152899 is 998251652.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 256152899 - 2¹² = 256148803 is a prime.

It is a super-2 number, since 2×256152899² = 131228615332208402, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (256152893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128076449 + 128076450.

It is an arithmetic number, because the mean of its divisors is an integer number (128076450).

Almost surely, 2^256152899 is an apocalyptic number.

256152899 is a deficient number, since it is larger than the sum of its proper divisors (1).

256152899 is an equidigital number, since it uses as much as digits as its factorization.

256152899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 388800, while the sum is 47.

The square root of 256152899 is about 16004.7773805199. Note that the first 3 decimals coincide. The cubic root of 256152899 is about 635.0868081459.

The spelling of 256152899 in words is "two hundred fifty-six million, one hundred fifty-two thousand, eight hundred ninety-nine".