30421225 has 6 divisors (see below), whose sum is σ = 37722350. Its totient is φ = 24336960.

The previous prime is 30421207. The next prime is 30421247. The reversal of 30421225 is 52212403.

It can be written as a sum of positive squares in 3 ways, for example, as 1734489 + 28686736 = 1317^2 + 5356^2 .

It is not a de Polignac number, because 30421225 - 2¹⁷ = 30290153 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 608400 + ... + 608449.

Almost surely, 2^30421225 is an apocalyptic number.

It is an amenable number.

30421225 is a deficient number, since it is larger than the sum of its proper divisors (7301125).

30421225 is a wasteful number, since it uses less digits than its factorization.

30421225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1216859 (or 1216854 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 30421225 is about 5515.5439441636. The cubic root of 30421225 is about 312.1707679285.

Adding to 30421225 its reverse (52212403), we get a palindrome (82633628).

The spelling of 30421225 in words is "thirty million, four hundred twenty-one thousand, two hundred twenty-five".