30988225 has 6 divisors (see below), whose sum is σ = 38425430. Its totient is φ = 24790560.

The previous prime is 30988219. The next prime is 30988231. The reversal of 30988225 is 52288903.

It is an interprime number because it is at equal distance from previous prime (30988219) and next prime (30988231).

It can be written as a sum of positive squares in 3 ways, for example, as 63504 + 30924721 = 252^2 + 5561^2 .

It is not a de Polignac number, because 30988225 - 2¹⁷ = 30857153 is a prime.

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, 619740 + ... + 619789.

Almost surely, 2^30988225 is an apocalyptic number.

It is an amenable number.

30988225 is a deficient number, since it is larger than the sum of its proper divisors (7437205).

30988225 is a wasteful number, since it uses less digits than its factorization.

30988225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1239539 (or 1239534 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 30988225 is about 5566.7068361824. The cubic root of 30988225 is about 314.0982862697.

It can be divided in two parts, 30988 and 225, that added together give a palindrome (31213).

The spelling of 30988225 in words is "thirty million, nine hundred eighty-eight thousand, two hundred twenty-five".