30898225 has 6 divisors (see below), whose sum is σ = 38313830. Its totient is φ = 24718560.

The previous prime is 30898213. The next prime is 30898229. The reversal of 30898225 is 52289803.

It can be written as a sum of positive squares in 3 ways, for example, as 471969 + 30426256 = 687^2 + 5516^2 .

It is not a de Polignac number, because 30898225 - 2⁵ = 30898193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30898229) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 617940 + ... + 617989.

Almost surely, 2^30898225 is an apocalyptic number.

It is an amenable number.

30898225 is a deficient number, since it is larger than the sum of its proper divisors (7415605).

30898225 is a wasteful number, since it uses less digits than its factorization.

30898225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1235939 (or 1235934 counting only the distinct ones).

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

The square root of 30898225 is about 5558.6171841565. The cubic root of 30898225 is about 313.7939098240.

The spelling of 30898225 in words is "thirty million, eight hundred ninety-eight thousand, two hundred twenty-five".