225200549809 has 9 divisors (see below), whose sum is σ = 228125250297. Its totient is φ = 222312894804.

The previous prime is 225200549807. The next prime is 225200549843. The reversal of 225200549809 is 908945002522.

The square root of 225200549809 is 474553.

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

It is not a de Polignac number, because 225200549809 - 2¹ = 225200549807 is a prime.

It is a super-3 number, since 3×225200549809³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225200549807) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 37486684 + ... + 37492690.

It is an arithmetic number, because the mean of its divisors is an integer number (25347250033).

Almost surely, 2^225200549809 is an apocalyptic number.

225200549809 is the 474553-rd square number.

225200549809 is the 237277-th centered octagonal number.

It is an amenable number.

225200549809 is a deficient number, since it is larger than the sum of its proper divisors (2924700488).

225200549809 is an frugal number, since it uses more digits than its factorization.

225200549809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12172 (or 6086 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 46.

The spelling of 225200549809 in words is "two hundred twenty-five billion, two hundred million, five hundred forty-nine thousand, eight hundred nine".