7272109989225 has 27 divisors (see below), whose sum is σ = 13025229454263. Its totient is φ = 3878437087440.

The previous prime is 7272109989223. The next prime is 7272109989269. The reversal of 7272109989225 is 5229899012727.

The square root of 7272109989225 is 2696685.

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

It can be written as a sum of positive squares in only one way, i.e., 2617959596121 + 4654150393104 = 1618011^2 + 2157348^2 .

It is not a de Polignac number, because 7272109989225 - 2¹ = 7272109989223 is a prime.

It is a super-2 number, since 2×7272109989225² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7272109989223) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 40360386 + ... + 40540164.

Almost surely, 2^{7272109989225} is an apocalyptic number.

7272109989225 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

7272109989225 is the 2696685-th square number.

7272109989225 is the 1348343-rd centered octagonal number.

It is an amenable number.

7272109989225 is a deficient number, since it is larger than the sum of its proper divisors (5753119465038).

7272109989225 is an frugal number, since it uses more digits than its factorization.

7272109989225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359574 (or 179787 counting only the distinct ones).

The product of its (nonzero) digits is 22861440, while the sum is 63.

The spelling of 7272109989225 in words is "seven trillion, two hundred seventy-two billion, one hundred nine million, nine hundred eighty-nine thousand, two hundred twenty-five".