30315025 has 24 divisors (see below), whose sum is σ = 41592824. Its totient is φ = 21772800.

The previous prime is 30315023. The next prime is 30315059. The reversal of 30315025 is 52051303.

It can be written as a sum of positive squares in 12 ways, for example, as 18037009 + 12278016 = 4247^2 + 3504^2 .

It is not a de Polignac number, because 30315025 - 2¹ = 30315023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30314993 and 30315011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30315023) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 10765 + ... + 13285.

Almost surely, 2^30315025 is an apocalyptic number.

It is an amenable number.

30315025 is a deficient number, since it is larger than the sum of its proper divisors (11277799).

30315025 is a wasteful number, since it uses less digits than its factorization.

30315025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2581 (or 2576 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 19.

The square root of 30315025 is about 5505.9081902989. The cubic root of 30315025 is about 311.8070833752.

Adding to 30315025 its reverse (52051303), we get a palindrome (82366328).

The spelling of 30315025 in words is "thirty million, three hundred fifteen thousand, twenty-five".