331729425 has 60 divisors (see below), whose sum is σ = 620625456. Its totient is φ = 175154400.

The previous prime is 331729421. The next prime is 331729441. The reversal of 331729425 is 524927133.

It is not a de Polignac number, because 331729425 - 2² = 331729421 is a prime.

It is a super-2 number, since 2×331729425² = 220088822821661250, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 331729425.

It is not an unprimeable number, because it can be changed into a prime (331729421) by changing a digit.

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 59 ways as a sum of consecutive naturals, for example, 215910 + ... + 217440.

Almost surely, 2^331729425 is an apocalyptic number.

It is an amenable number.

331729425 is a deficient number, since it is larger than the sum of its proper divisors (288896031).

331729425 is a wasteful number, since it uses less digits than its factorization.

331729425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1660 (or 1646 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 331729425 is about 18213.4407787216. The cubic root of 331729425 is about 692.2473979541.

The spelling of 331729425 in words is "three hundred thirty-one million, seven hundred twenty-nine thousand, four hundred twenty-five".