22145245254 has 144 divisors (see below), whose sum is σ = 54605878704. Its totient is φ = 6427296000.

The previous prime is 22145245249. The next prime is 22145245271. The reversal of 22145245254 is 45254254122.

22145245254 is a `hidden beast` number, since 22 + 14 + 524 + 52 + 54 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 128007112 + ... + 128007284.

It is an arithmetic number, because the mean of its divisors is an integer number (379207491).

Almost surely, 2^22145245254 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22145245254, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27302939352).

22145245254 is an abundant number, since it is smaller than the sum of its proper divisors (32460633450).

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

22145245254 is a wasteful number, since it uses less digits than its factorization.

22145245254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503 (or 327 counting only the distinct ones).

The product of its digits is 128000, while the sum is 36.

Adding to 22145245254 its reverse (45254254122), we get a palindrome (67399499376).

The spelling of 22145245254 in words is "twenty-two billion, one hundred forty-five million, two hundred forty-five thousand, two hundred fifty-four".