2557315320 has 256 divisors, whose sum is σ = 8999424000. Its totient is φ = 569327616.

The previous prime is 2557315303. The next prime is 2557315331. The reversal of 2557315320 is 235137552.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5905824 + ... + 5906256.

It is an arithmetic number, because the mean of its divisors is an integer number (35154000).

Almost surely, 2^2557315320 is an apocalyptic number.

2557315320 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 2557315320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4499712000).

2557315320 is an abundant number, since it is smaller than the sum of its proper divisors (6442108680).

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

2557315320 is a wasteful number, since it uses less digits than its factorization.

2557315320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622 (or 618 counting only the distinct ones).

The product of its (nonzero) digits is 31500, while the sum is 33.

The square root of 2557315320 is about 50569.9052797215. The cubic root of 2557315320 is about 1367.5023881816.

The spelling of 2557315320 in words is "two billion, five hundred fifty-seven million, three hundred fifteen thousand, three hundred twenty".