22504250405440 has 28 divisors (see below), whose sum is σ = 53588246278716. Its totient is φ = 9001700162048.

The previous prime is 22504250405383. The next prime is 22504250405479. The reversal of 22504250405440 is 4450405240522.

It can be written as a sum of positive squares in 2 ways, for example, as 17803471381056 + 4700779024384 = 4219416^2 + 2168128^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22504250405440.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35162890939 + ... + 35162891578.

Almost surely, 2^{22504250405440} is an apocalyptic number.

22504250405440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22504250405440 is an abundant number, since it is smaller than the sum of its proper divisors (31083995873276).

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

22504250405440 is an equidigital number, since it uses as much as digits as its factorization.

22504250405440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70325782534 (or 70325782524 counting only the distinct ones).

The product of its (nonzero) digits is 256000, while the sum is 37.

Adding to 22504250405440 its reverse (4450405240522), we get a palindrome (26954655645962).

The spelling of 22504250405440 in words is "twenty-two trillion, five hundred four billion, two hundred fifty million, four hundred five thousand, four hundred forty".