605817225 has 84 divisors (see below), whose sum is σ = 1213417996. Its totient is φ = 298131840.

The previous prime is 605817203. The next prime is 605817241. The reversal of 605817225 is 522718506.

It is a happy number.

605817225 is a `hidden beast` number, since 6 + 0 + 581 + 72 + 2 + 5 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 80353296 + 525463929 = 8964^2 + 22923^2 .

It is not a de Polignac number, because 605817225 - 2⁵ = 605817193 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 605817225.

It is an unprimeable number.

It is a polite number, since it can be written in 83 ways as a sum of consecutive naturals, for example, 235647 + ... + 238203.

Almost surely, 2^605817225 is an apocalyptic number.

605817225 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

605817225 is an abundant number, since it is smaller than the sum of its proper divisors (607600771).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

605817225 is a wasteful number, since it uses less digits than its factorization.

605817225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2598 (or 2578 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The square root of 605817225 is about 24613.3546067983. The cubic root of 605817225 is about 846.1497018922.

The spelling of 605817225 in words is "six hundred five million, eight hundred seventeen thousand, two hundred twenty-five".