2557530280 has 32 divisors (see below), whose sum is σ = 5909972040. Its totient is φ = 995362560.

The previous prime is 2557530277. The next prime is 2557530299. The reversal of 2557530280 is 820357552.

It can be written as a sum of positive squares in 4 ways, for example, as 2208812004 + 348718276 = 46998^2 + 18674^2 .

It is a super-2 number, since 2×2557530280² = 13081922266233756800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 862551 + ... + 865510.

Almost surely, 2^2557530280 is an apocalyptic number.

2557530280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2557530280 is an abundant number, since it is smaller than the sum of its proper divisors (3352441760).

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

2557530280 is a wasteful number, since it uses less digits than its factorization.

2557530280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1728109 (or 1728105 counting only the distinct ones).

The product of its (nonzero) digits is 84000, while the sum is 37.

The square root of 2557530280 is about 50572.0306098144. The cubic root of 2557530280 is about 1367.5407031122.

It can be divided in two parts, 25575 and 30280, that added together give a palindrome (55855).

The spelling of 2557530280 in words is "two billion, five hundred fifty-seven million, five hundred thirty thousand, two hundred eighty".