255148749 has 12 divisors (see below), whose sum is σ = 373214400. Its totient is φ = 167945544.

The previous prime is 255148741. The next prime is 255148763. The reversal of 255148749 is 947841552.

It is not a de Polignac number, because 255148749 - 2³ = 255148741 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255148741) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 178719 + ... + 180140.

It is an arithmetic number, because the mean of its divisors is an integer number (31101200).

Almost surely, 2^255148749 is an apocalyptic number.

It is an amenable number.

255148749 is a deficient number, since it is larger than the sum of its proper divisors (118065651).

255148749 is a wasteful number, since it uses less digits than its factorization.

255148749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358944 (or 358941 counting only the distinct ones).

The product of its digits is 403200, while the sum is 45.

The square root of 255148749 is about 15973.3762555072. The cubic root of 255148749 is about 634.2558492973.

The spelling of 255148749 in words is "two hundred fifty-five million, one hundred forty-eight thousand, seven hundred forty-nine".