255290490 has 288 divisors, whose sum is σ = 856726416. Its totient is φ = 52254720.

The previous prime is 255290473. The next prime is 255290507. The reversal of 255290490 is 94092552.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (255290473) and next prime (255290507).

It can be written as a sum of positive squares in 8 ways, for example, as 15752961 + 239537529 = 3969^2 + 15477^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 3497094 + ... + 3497166.

Almost surely, 2^255290490 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255290490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (428363208).

255290490 is an abundant number, since it is smaller than the sum of its proper divisors (601435926).

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

255290490 is a wasteful number, since it uses less digits than its factorization.

255290490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174 (or 164 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 255290490 is about 15977.8124284897. The cubic root of 255290490 is about 634.3732754610.

The spelling of 255290490 in words is "two hundred fifty-five million, two hundred ninety thousand, four hundred ninety".