45425124221 has 4 divisors (see below), whose sum is σ = 45458210172. Its totient is φ = 45392038272.

The previous prime is 45425124167. The next prime is 45425124229. The reversal of 45425124221 is 12242152454.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25652827225 + 19772296996 = 160165^2 + 140614^2 .

It is a cyclic number.

It is not a de Polignac number, because 45425124221 - 2¹⁴ = 45425107837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45425124229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16540916 + ... + 16543661.

It is an arithmetic number, because the mean of its divisors is an integer number (11364552543).

Almost surely, 2^45425124221 is an apocalyptic number.

It is an amenable number.

45425124221 is a deficient number, since it is larger than the sum of its proper divisors (33085951).

45425124221 is a wasteful number, since it uses less digits than its factorization.

45425124221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33085950.

The product of its digits is 25600, while the sum is 32.

Adding to 45425124221 its reverse (12242152454), we get a palindrome (57667276675).

The spelling of 45425124221 in words is "forty-five billion, four hundred twenty-five million, one hundred twenty-four thousand, two hundred twenty-one".