1522250055440 has 80 divisors (see below), whose sum is σ = 3626652849600. Its totient is φ = 593899762176.

The previous prime is 1522250055439. The next prime is 1522250055497. The reversal of 1522250055440 is 445500522251.

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 1522250055440.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2126891 + ... + 2751029.

It is an arithmetic number, because the mean of its divisors is an integer number (45333160620).

Almost surely, 2^{1522250055440} is an apocalyptic number.

1522250055440 is a gapful number since it is divisible by the number (10) 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 1522250055440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1813326424800).

1522250055440 is an abundant number, since it is smaller than the sum of its proper divisors (2104402794160).

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

1522250055440 is a wasteful number, since it uses less digits than its factorization.

1522250055440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624904 (or 624898 counting only the distinct ones).

The product of its (nonzero) digits is 80000, while the sum is 35.

Adding to 1522250055440 its reverse (445500522251), we get a palindrome (1967750577691).

The spelling of 1522250055440 in words is "one trillion, five hundred twenty-two billion, two hundred fifty million, fifty-five thousand, four hundred forty".