308225 has 6 divisors (see below), whose sum is σ = 382230. Its totient is φ = 246560.

The previous prime is 308219. The next prime is 308249. The reversal of 308225 is 522803.

It can be written as a sum of positive squares in 3 ways, for example, as 4624 + 303601 = 68^2 + 551^2 .

It is not a de Polignac number, because 308225 - 2⁸ = 307969 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 308197 and 308206.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6140 + ... + 6189.

It is an arithmetic number, because the mean of its divisors is an integer number (63705).

It is a Proth number, since it is equal to 301 ⋅ 2¹⁰ + 1 and 301 < 2¹⁰.

2³⁰⁸²²⁵ is an apocalyptic number.

It is an amenable number.

308225 is a deficient number, since it is larger than the sum of its proper divisors (74005).

308225 is a wasteful number, since it uses less digits than its factorization.

308225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12339 (or 12334 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 308225 is about 555.1801509420. The cubic root of 308225 is about 67.5495749209.

The spelling of 308225 in words is "three hundred eight thousand, two hundred twenty-five".