648025331 has 8 divisors (see below), whose sum is σ = 662177280. Its totient is φ = 633888648.

The previous prime is 648025327. The next prime is 648025349. The reversal of 648025331 is 133520846.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 648025331 - 2² = 648025327 is a prime.

It is a super-2 number, since 2×648025331² = 839873659235319122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (648025831) 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 7 ways as a sum of consecutive naturals, for example, 139610 + ... + 144176.

It is an arithmetic number, because the mean of its divisors is an integer number (82772160).

Almost surely, 2^648025331 is an apocalyptic number.

648025331 is a deficient number, since it is larger than the sum of its proper divisors (14151949).

648025331 is a wasteful number, since it uses less digits than its factorization.

648025331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7633.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 648025331 is about 25456.3416656832. The cubic root of 648025331 is about 865.3610178474.

The spelling of 648025331 in words is "six hundred forty-eight million, twenty-five thousand, three hundred thirty-one".