30677225 has 18 divisors (see below), whose sum is σ = 39194106. Its totient is φ = 23804800.

The previous prime is 30677209. The next prime is 30677233. The reversal of 30677225 is 52277603.

It is a happy number.

It can be written as a sum of positive squares in 9 ways, for example, as 3345241 + 27331984 = 1829^2 + 5228^2 .

It is not a de Polignac number, because 30677225 - 2⁴ = 30677209 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 30677191 and 30677200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 177239 + ... + 177411.

Almost surely, 2^30677225 is an apocalyptic number.

It is an amenable number.

30677225 is a deficient number, since it is larger than the sum of its proper divisors (8516881).

30677225 is an equidigital number, since it uses as much as digits as its factorization.

30677225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397 (or 219 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 32.

The square root of 30677225 is about 5538.7024653794. The cubic root of 30677225 is about 313.0439805232.

The spelling of 30677225 in words is "thirty million, six hundred seventy-seven thousand, two hundred twenty-five".