648314225 has 48 divisors (see below), whose sum is σ = 924857472. Its totient is φ = 447068160.

The previous prime is 648314221. The next prime is 648314231. The reversal of 648314225 is 522413846.

It is not a de Polignac number, because 648314225 - 2² = 648314221 is a prime.

It is a super-2 number, since 2×648314225² = 840622668674701250, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (648314221) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 320417 + ... + 322433.

It is an arithmetic number, because the mean of its divisors is an integer number (19267864).

Almost surely, 2^648314225 is an apocalyptic number.

648314225 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

648314225 is a deficient number, since it is larger than the sum of its proper divisors (276543247).

648314225 is a wasteful number, since it uses less digits than its factorization.

648314225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2106 (or 2101 counting only the distinct ones).

The product of its digits is 46080, while the sum is 35.

The square root of 648314225 is about 25462.0153365754. The cubic root of 648314225 is about 865.4895933073.

The spelling of 648314225 in words is "six hundred forty-eight million, three hundred fourteen thousand, two hundred twenty-five".