331366025 has 6 divisors (see below), whose sum is σ = 410893902. Its totient is φ = 265092800.

The previous prime is 331366019. The next prime is 331366031. The reversal of 331366025 is 520663133.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (331366019) and next prime (331366031).

It can be written as a sum of positive squares in 3 ways, for example, as 113124496 + 218241529 = 10636^2 + 14773^2 .

It is not a de Polignac number, because 331366025 - 2⁶ = 331365961 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 6627296 + ... + 6627345.

It is an arithmetic number, because the mean of its divisors is an integer number (68482317).

Almost surely, 2^331366025 is an apocalyptic number.

It is an amenable number.

331366025 is a deficient number, since it is larger than the sum of its proper divisors (79527877).

331366025 is a wasteful number, since it uses less digits than its factorization.

331366025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13254651 (or 13254646 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 29.

The square root of 331366025 is about 18203.4618960241. The cubic root of 331366025 is about 691.9945265864.

The spelling of 331366025 in words is "three hundred thirty-one million, three hundred sixty-six thousand, twenty-five".