22025325125421 has 24 divisors (see below), whose sum is σ = 33044954639424. Its totient is φ = 14660279696160.

The previous prime is 22025325125387. The next prime is 22025325125429. The reversal of 22025325125421 is 12452152352022.

22025325125421 is a `hidden beast` number, since 2 + 2 + 0 + 2 + 532 + 51 + 2 + 54 + 21 = 666.

It is not a de Polignac number, because 22025325125421 - 2¹⁵ = 22025325092653 is a prime.

It is a super-2 number, since 2×22025325125421² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22025325125429) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71668536 + ... + 71975201.

It is an arithmetic number, because the mean of its divisors is an integer number (1376873109976).

Almost surely, 2^{22025325125421} is an apocalyptic number.

It is an amenable number.

22025325125421 is a deficient number, since it is larger than the sum of its proper divisors (11019629514003).

22025325125421 is an equidigital number, since it uses as much as digits as its factorization.

22025325125421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143644383 (or 143644371 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 36.

Adding to 22025325125421 its reverse (12452152352022), we get a palindrome (34477477477443).

The spelling of 22025325125421 in words is "twenty-two trillion, twenty-five billion, three hundred twenty-five million, one hundred twenty-five thousand, four hundred twenty-one".