2543140025440 has 48 divisors (see below), whose sum is σ = 6866478071712. Its totient is φ = 871933722624.

The previous prime is 2543140025369. The next prime is 2543140025443. The reversal of 2543140025440 is 445200413452.

It is a super-2 number, since 2×2543140025440² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2543140025396 and 2543140025405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2543140025443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1135329249 + ... + 1135331488.

It is an arithmetic number, because the mean of its divisors is an integer number (143051626494).

Almost surely, 2^{2543140025440} is an apocalyptic number.

2543140025440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2543140025440 is an abundant number, since it is smaller than the sum of its proper divisors (4323338046272).

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

2543140025440 is a wasteful number, since it uses less digits than its factorization.

2543140025440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2270660759 (or 2270660751 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 34.

Adding to 2543140025440 its reverse (445200413452), we get a palindrome (2988340438892).

The spelling of 2543140025440 in words is "two trillion, five hundred forty-three billion, one hundred forty million, twenty-five thousand, four hundred forty".