225655610225 has 12 divisors (see below), whose sum is σ = 296272542924. Its totient is φ = 169905400320.

The previous prime is 225655610221. The next prime is 225655610269. The reversal of 225655610225 is 522016556522.

It can be written as a sum of positive squares in 6 ways, for example, as 11308833649 + 214346776576 = 106343^2 + 462976^2 .

It is not a de Polignac number, because 225655610225 - 2² = 225655610221 is a prime.

It is a super-3 number, since 3×225655610225³ (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 (225655610221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 265476764 + ... + 265477613.

It is an arithmetic number, because the mean of its divisors is an integer number (24689378577).

Almost surely, 2^225655610225 is an apocalyptic number.

225655610225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

225655610225 is a deficient number, since it is larger than the sum of its proper divisors (70616932699).

225655610225 is a wasteful number, since it uses less digits than its factorization.

225655610225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530954404 (or 530954399 counting only the distinct ones).

The product of its (nonzero) digits is 360000, while the sum is 41.

The spelling of 225655610225 in words is "two hundred twenty-five billion, six hundred fifty-five million, six hundred ten thousand, two hundred twenty-five".