255251290 has 24 divisors (see below), whose sum is σ = 534465972. Its totient is φ = 87514560.

The previous prime is 255251279. The next prime is 255251299. The reversal of 255251290 is 92152552.

It can be written as a sum of positive squares in 2 ways, for example, as 215473041 + 39778249 = 14679^2 + 6307^2 .

It is not an unprimeable number, because it can be changed into a prime (255251299) 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 11 ways as a sum of consecutive naturals, for example, 259971 + ... + 260950.

Almost surely, 2^255251290 is an apocalyptic number.

255251290 is an abundant number, since it is smaller than the sum of its proper divisors (279214682).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

255251290 is a wasteful number, since it uses less digits than its factorization.

255251290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520942 (or 520935 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 31.

The square root of 255251290 is about 15976.5856803010. The cubic root of 255251290 is about 634.3408043398.

The spelling of 255251290 in words is "two hundred fifty-five million, two hundred fifty-one thousand, two hundred ninety".