22309903225 has 9 divisors (see below), whose sum is σ = 27665206093. Its totient is φ = 17847325120.

The previous prime is 22309903201. The next prime is 22309903243. The reversal of 22309903225 is 52230990322.

The square root of 22309903225 is 149365.

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 4159347049 + 18150556176 = 64493^2 + 134724^2 .

It is not a de Polignac number, because 22309903225 - 2¹⁹ = 22309378937 is a prime.

It is a super-3 number, since 3×22309903225³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 731889 + ... + 761761.

Almost surely, 2^22309903225 is an apocalyptic number.

22309903225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

22309903225 is the 149365-th square number.

22309903225 is the 74683-rd centered octagonal number.

It is an amenable number.

22309903225 is a deficient number, since it is larger than the sum of its proper divisors (5355302868).

22309903225 is an frugal number, since it uses more digits than its factorization.

22309903225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59756 (or 29878 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 37.

The spelling of 22309903225 in words is "twenty-two billion, three hundred nine million, nine hundred three thousand, two hundred twenty-five".