255782149 has 16 divisors (see below), whose sum is σ = 312480000. Its totient is φ = 204589440.

The previous prime is 255782143. The next prime is 255782201. The reversal of 255782149 is 941287552.

It is a cyclic number.

It is not a de Polignac number, because 255782149 - 2⁹ = 255781637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255782143) 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, 12774 + ... + 25975.

It is an arithmetic number, because the mean of its divisors is an integer number (19530000).

Almost surely, 2^255782149 is an apocalyptic number.

It is an amenable number.

255782149 is a deficient number, since it is larger than the sum of its proper divisors (56697851).

255782149 is a wasteful number, since it uses less digits than its factorization.

255782149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38820.

The product of its digits is 201600, while the sum is 43.

The square root of 255782149 is about 15993.1907072979. The cubic root of 255782149 is about 634.7802567001.

The spelling of 255782149 in words is "two hundred fifty-five million, seven hundred eighty-two thousand, one hundred forty-nine".