320630025 has 24 divisors (see below), whose sum is σ = 530769600. Its totient is φ = 170789440.

The previous prime is 320630017. The next prime is 320630027. The reversal of 320630025 is 520036023.

It is not a de Polignac number, because 320630025 - 2³ = 320630017 is a prime.

It is a super-2 number, since 2×320630025² = 205607225863001250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 320629983 and 320630010.

It is not an unprimeable number, because it can be changed into a prime (320630027) 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 23 ways as a sum of consecutive naturals, for example, 71551 + ... + 75899.

It is an arithmetic number, because the mean of its divisors is an integer number (22115400).

Almost surely, 2^320630025 is an apocalyptic number.

It is an amenable number.

320630025 is a deficient number, since it is larger than the sum of its proper divisors (210139575).

320630025 is a wasteful number, since it uses less digits than its factorization.

320630025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5345 (or 5340 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 320630025 is about 17906.1448949795. The cubic root of 320630025 is about 684.4389708973.

Adding to 320630025 its reverse (520036023), we get a palindrome (840666048).

The spelling of 320630025 in words is "three hundred twenty million, six hundred thirty thousand, twenty-five".