30120025 has 18 divisors (see below), whose sum is σ = 40448490. Its totient is φ = 22239360.

The previous prime is 30120023. The next prime is 30120047. The reversal of 30120025 is 52002103.

It can be written as a sum of positive squares in 9 ways, for example, as 17239104 + 12880921 = 4152^2 + 3589^2 .

It is not a de Polignac number, because 30120025 - 2¹ = 30120023 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 30119987 and 30120014.

It is not an unprimeable number, because it can be changed into a prime (30120023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 661 + ... + 7789.

Almost surely, 2^30120025 is an apocalyptic number.

It is an amenable number.

30120025 is a deficient number, since it is larger than the sum of its proper divisors (10328465).

30120025 is a wasteful number, since it uses less digits than its factorization.

30120025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7165 (or 7147 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 30120025 is about 5488.1713712310. The cubic root of 30120025 is about 311.1370831728.

Adding to 30120025 its reverse (52002103), we get a palindrome (82122128).

The spelling of 30120025 in words is "thirty million, one hundred twenty thousand, twenty-five".