2559489240 has 512 divisors, whose sum is σ = 10285056000. Its totient is φ = 493516800.

The previous prime is 2559489217. The next prime is 2559489271. The reversal of 2559489240 is 429849552.

It is a self number, because there is not a number n which added to its sum of digits gives 2559489240.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 10709041 + ... + 10709279.

It is an arithmetic number, because the mean of its divisors is an integer number (20088000).

Almost surely, 2^2559489240 is an apocalyptic number.

2559489240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2559489240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5142528000).

2559489240 is an abundant number, since it is smaller than the sum of its proper divisors (7725566760).

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

2559489240 is a wasteful number, since it uses less digits than its factorization.

2559489240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351 (or 347 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 48.

The square root of 2559489240 is about 50591.3949204803. The cubic root of 2559489240 is about 1367.8897734449.

The spelling of 2559489240 in words is "two billion, five hundred fifty-nine million, four hundred eighty-nine thousand, two hundred forty".