331651625 has 16 divisors (see below), whose sum is σ = 414545040. Its totient is φ = 264908800.

The previous prime is 331651613. The next prime is 331651643. The reversal of 331651625 is 526156133.

It can be written as a sum of positive squares in 8 ways, for example, as 127418944 + 204232681 = 11288^2 + 14291^2 .

It is not a de Polignac number, because 331651625 - 2¹⁰ = 331650601 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 331651591 and 331651600.

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 15 ways as a sum of consecutive naturals, for example, 97961 + ... + 101289.

It is an arithmetic number, because the mean of its divisors is an integer number (25909065).

Almost surely, 2^331651625 is an apocalyptic number.

It is an amenable number.

331651625 is a deficient number, since it is larger than the sum of its proper divisors (82893415).

331651625 is an equidigital number, since it uses as much as digits as its factorization.

331651625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4141 (or 4131 counting only the distinct ones).

The product of its digits is 16200, while the sum is 32.

The square root of 331651625 is about 18211.3048681307. The cubic root of 331651625 is about 692.1932764780.

The spelling of 331651625 in words is "three hundred thirty-one million, six hundred fifty-one thousand, six hundred twenty-five".