30544225 has 12 divisors (see below), whose sum is σ = 38497660. Its totient is φ = 24033600.

The previous prime is 30544211. The next prime is 30544231. The reversal of 30544225 is 52244503.

It can be written as a sum of positive squares in 6 ways, for example, as 8856576 + 21687649 = 2976^2 + 4657^2 .

It is not a de Polignac number, because 30544225 - 2⁷ = 30544097 is a prime.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 30544225.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8490 + ... + 11539.

Almost surely, 2^30544225 is an apocalyptic number.

It is an amenable number.

30544225 is a deficient number, since it is larger than the sum of its proper divisors (7953435).

30544225 is a wasteful number, since it uses less digits than its factorization.

30544225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20100 (or 20095 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 30544225 is about 5526.6830015842. The cubic root of 30544225 is about 312.5909282067.

Adding to 30544225 its reverse (52244503), we get a palindrome (82788728).

The spelling of 30544225 in words is "thirty million, five hundred forty-four thousand, two hundred twenty-five".