2522140440 has 128 divisors (see below), whose sum is σ = 8167910400. Its totient is φ = 621125120.

The previous prime is 2522140399. The next prime is 2522140513. The reversal of 2522140440 is 440412252.

It is a happy number.

It is a super-2 number, since 2×2522140440² = 12722384798166787200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 2522140440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64285 + ... + 95795.

It is an arithmetic number, because the mean of its divisors is an integer number (63811800).

Almost surely, 2^2522140440 is an apocalyptic number.

2522140440 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 2522140440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4083955200).

2522140440 is an abundant number, since it is smaller than the sum of its proper divisors (5645769960).

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

2522140440 is a wasteful number, since it uses less digits than its factorization.

2522140440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31577 (or 31573 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 2522140440 is about 50220.9163596205. The cubic root of 2522140440 is about 1361.2035985738.

Adding to 2522140440 its reverse (440412252), we get a palindrome (2962552692).

The spelling of 2522140440 in words is "two billion, five hundred twenty-two million, one hundred forty thousand, four hundred forty".