329428725 has 12 divisors (see below), whose sum is σ = 544655616. Its totient is φ = 175695280.

The previous prime is 329428717. The next prime is 329428733. The reversal of 329428725 is 527824923.

It is an interprime number because it is at equal distance from previous prime (329428717) and next prime (329428733).

It is not a de Polignac number, because 329428725 - 2³ = 329428717 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 2196117 + ... + 2196266.

It is an arithmetic number, because the mean of its divisors is an integer number (45387968).

Almost surely, 2^329428725 is an apocalyptic number.

It is an amenable number.

329428725 is a deficient number, since it is larger than the sum of its proper divisors (215226891).

329428725 is a wasteful number, since it uses less digits than its factorization.

329428725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4392396 (or 4392391 counting only the distinct ones).

The product of its digits is 241920, while the sum is 42.

The square root of 329428725 is about 18150.1714867932. The cubic root of 329428725 is about 690.6433298439.

The spelling of 329428725 in words is "three hundred twenty-nine million, four hundred twenty-eight thousand, seven hundred twenty-five".