331236725 has 12 divisors (see below), whose sum is σ = 410960676. Its totient is φ = 264842880.

The previous prime is 331236707. The next prime is 331236727. The reversal of 331236725 is 527632133.

It can be written as a sum of positive squares in 6 ways, for example, as 33124 + 331203601 = 182^2 + 18199^2 .

It is not a de Polignac number, because 331236725 - 2¹⁴ = 331220341 is a prime.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 331236691 and 331236700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331236727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 79289 + ... + 83361.

It is an arithmetic number, because the mean of its divisors is an integer number (34246723).

Almost surely, 2^331236725 is an apocalyptic number.

It is an amenable number.

331236725 is a deficient number, since it is larger than the sum of its proper divisors (79723951).

331236725 is a wasteful number, since it uses less digits than its factorization.

331236725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7336 (or 7331 counting only the distinct ones).

The product of its digits is 22680, while the sum is 32.

The square root of 331236725 is about 18199.9100272501. The cubic root of 331236725 is about 691.9045087754.

Adding to 331236725 its reverse (527632133), we get a palindrome (858868858).

The spelling of 331236725 in words is "three hundred thirty-one million, two hundred thirty-six thousand, seven hundred twenty-five".