2552421245440 has 160 divisors (see below), whose sum is σ = 6677865089280. Its totient is φ = 927918489600.

The previous prime is 2552421245389. The next prime is 2552421245449. The reversal of 2552421245440 is 445421242552.

It is a tau number, because it is divible by the number of its divisors (160).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 2552421245393 and 2552421245402.

It is not an unprimeable number, because it can be changed into a prime (2552421245449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 143072041 + ... + 143089879.

It is an arithmetic number, because the mean of its divisors is an integer number (41736656808).

Almost surely, 2^{2552421245440} is an apocalyptic number.

2552421245440 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 2552421245440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3338932544640).

2552421245440 is an abundant number, since it is smaller than the sum of its proper divisors (4125443843840).

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

2552421245440 is a wasteful number, since it uses less digits than its factorization.

2552421245440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22954 (or 22938 counting only the distinct ones).

The product of its (nonzero) digits is 512000, while the sum is 40.

Adding to 2552421245440 its reverse (445421242552), we get a palindrome (2997842487992).

The spelling of 2552421245440 in words is "two trillion, five hundred fifty-two billion, four hundred twenty-one million, two hundred forty-five thousand, four hundred forty".