331145325 has 72 divisors (see below), whose sum is σ = 690812928. Its totient is φ = 148487040.

The previous prime is 331145323. The next prime is 331145333. The reversal of 331145325 is 523541133.

331145325 is a `hidden beast` number, since 331 + 1 + 4 + 5 + 325 = 666.

It is not a de Polignac number, because 331145325 - 2¹ = 331145323 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331145323) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 81492 + ... + 85458.

It is an arithmetic number, because the mean of its divisors is an integer number (9594624).

Almost surely, 2^331145325 is an apocalyptic number.

331145325 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

331145325 is an abundant number, since it is smaller than the sum of its proper divisors (359667603).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

331145325 is a wasteful number, since it uses less digits than its factorization.

331145325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4043 (or 4035 counting only the distinct ones).

The product of its digits is 5400, while the sum is 27.

The square root of 331145325 is about 18197.3988525833. The cubic root of 331145325 is about 691.8408625622.

Adding to 331145325 its reverse (523541133), we get a palindrome (854686458).

The spelling of 331145325 in words is "three hundred thirty-one million, one hundred forty-five thousand, three hundred twenty-five".