320211025 has 12 divisors (see below), whose sum is σ = 406747404. Its totient is φ = 249920000.

The previous prime is 320211013. The next prime is 320211041. The reversal of 320211025 is 520112023.

It can be written as a sum of positive squares in 6 ways, for example, as 20367169 + 299843856 = 4513^2 + 17316^2 .

It is not a de Polignac number, because 320211025 - 2⁵ = 320210993 is a prime.

It is a Duffinian number.

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, 155176 + ... + 157225.

It is an arithmetic number, because the mean of its divisors is an integer number (33895617).

Almost surely, 2^320211025 is an apocalyptic number.

It is an amenable number.

320211025 is a deficient number, since it is larger than the sum of its proper divisors (86536379).

320211025 is a wasteful number, since it uses less digits than its factorization.

320211025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312452 (or 312447 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 320211025 is about 17894.4411759630. The cubic root of 320211025 is about 684.1406988300.

Adding to 320211025 its reverse (520112023), we get a palindrome (840323048).

The spelling of 320211025 in words is "three hundred twenty million, two hundred eleven thousand, twenty-five".