22548325921 has 45 divisors (see below), whose sum is σ = 26713701705. Its totient is φ = 19028401920.

The previous prime is 22548325903. The next prime is 22548325951. The reversal of 22548325921 is 12952384522.

The square root of 22548325921 is 150161.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 2847396321 + 19700929600 = 53361^2 + 140360^2 .

It is not a de Polignac number, because 22548325921 - 2¹⁵ = 22548293153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22548325901) 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 44 ways as a sum of consecutive naturals, for example, 308881141 + ... + 308881213.

Almost surely, 2^22548325921 is an apocalyptic number.

22548325921 is the 150161-st square number.

22548325921 is the 75081-st centered octagonal number.

It is an amenable number.

22548325921 is a deficient number, since it is larger than the sum of its proper divisors (4165375784).

22548325921 is an frugal number, since it uses more digits than its factorization.

22548325921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224 (or 101 counting only the distinct ones).

The product of its digits is 345600, while the sum is 43.

The spelling of 22548325921 in words is "twenty-two billion, five hundred forty-eight million, three hundred twenty-five thousand, nine hundred twenty-one".