331340625 has 240 divisors, whose sum is σ = 816697728. Its totient is φ = 129600000.

The previous prime is 331340621. The next prime is 331340627. The reversal of 331340625 is 526043133.

It is a happy number.

331340625 is a `hidden beast` number, since 3 + 3 + 1 + 34 + 0 + 625 = 666.

It is not a de Polignac number, because 331340625 - 2² = 331340621 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331340621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 19490617 + ... + 19490633.

Almost surely, 2^331340625 is an apocalyptic number.

331340625 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

331340625 is an abundant number, since it is smaller than the sum of its proper divisors (485357103).

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

331340625 is an equidigital number, since it uses as much as digits as its factorization.

331340625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72 (or 43 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

The square root of 331340625 is about 18202.7642131628. The cubic root of 331340625 is about 691.9768451216.

Adding to 331340625 its reverse (526043133), we get a palindrome (857383758).

The spelling of 331340625 in words is "three hundred thirty-one million, three hundred forty thousand, six hundred twenty-five".