30400225 has 6 divisors (see below), whose sum is σ = 37696310. Its totient is φ = 24320160.

The previous prime is 30400219. The next prime is 30400231. The reversal of 30400225 is 52200403.

It is an interprime number because it is at equal distance from previous prime (30400219) and next prime (30400231).

It can be written as a sum of positive squares in 3 ways, for example, as 7056 + 30393169 = 84^2 + 5513^2 .

It is not a de Polignac number, because 30400225 - 2⁹ = 30399713 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30400199 and 30400208.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 607980 + ... + 608029.

Almost surely, 2^30400225 is an apocalyptic number.

It is an amenable number.

30400225 is a deficient number, since it is larger than the sum of its proper divisors (7296085).

30400225 is a wasteful number, since it uses less digits than its factorization.

30400225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1216019 (or 1216014 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 30400225 is about 5513.6399048179. The cubic root of 30400225 is about 312.0989201187.

Adding to 30400225 its reverse (52200403), we get a palindrome (82600628).

It can be divided in two parts, 30400 and 225, that added together give a square (30625 = 175²).

The spelling of 30400225 in words is "thirty million, four hundred thousand, two hundred twenty-five".