648459625 has 16 divisors (see below), whose sum is σ = 882850176. Its totient is φ = 471606000.

The previous prime is 648459599. The next prime is 648459673. The reversal of 648459625 is 526954846.

It is not a de Polignac number, because 648459625 - 2²⁹ = 111588713 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 234429 + ... + 237178.

It is an arithmetic number, because the mean of its divisors is an integer number (55178136).

Almost surely, 2^648459625 is an apocalyptic number.

It is an amenable number.

648459625 is a deficient number, since it is larger than the sum of its proper divisors (234390551).

648459625 is a wasteful number, since it uses less digits than its factorization.

648459625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471633 (or 471623 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 49.

The square root of 648459625 is about 25464.8704100374. The cubic root of 648459625 is about 865.5542907310.

The spelling of 648459625 in words is "six hundred forty-eight million, four hundred fifty-nine thousand, six hundred twenty-five".