525455220140344 has 128 divisors (see below), whose sum is σ = 1096479090524160. Its totient is φ = 234429549120000.

The previous prime is 525455220140329. The next prime is 525455220140377. The reversal of 525455220140344 is 443041022554525.

It is a super-2 number, since 2×525455220140344² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 525455220140294 and 525455220140303.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38128954734 + ... + 38128968514.

It is an arithmetic number, because the mean of its divisors is an integer number (8566242894720).

Almost surely, 2^{525455220140344} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 525455220140344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (548239545262080).

525455220140344 is an abundant number, since it is smaller than the sum of its proper divisors (571023870383816).

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

525455220140344 is a wasteful number, since it uses less digits than its factorization.

525455220140344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26333 (or 26329 counting only the distinct ones).

The product of its (nonzero) digits is 3840000, while the sum is 46.

Adding to 525455220140344 its reverse (443041022554525), we get a palindrome (968496242694869).

The spelling of 525455220140344 in words is "five hundred twenty-five trillion, four hundred fifty-five billion, two hundred twenty million, one hundred forty thousand, three hundred forty-four".