648633825 has 108 divisors (see below), whose sum is σ = 1402149840. Its totient is φ = 296382240.

The previous prime is 648633781. The next prime is 648633841. The reversal of 648633825 is 528336846.

It is a happy number.

648633825 is a `hidden beast` number, since 6 + 4 + 8 + 633 + 8 + 2 + 5 = 666.

It is not a de Polignac number, because 648633825 - 2¹⁴ = 648617441 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 296586 + ... + 298764.

Almost surely, 2^648633825 is an apocalyptic number.

It is an amenable number.

648633825 is an abundant number, since it is smaller than the sum of its proper divisors (753516015).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

648633825 is a wasteful number, since it uses less digits than its factorization.

648633825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2218 (or 2194 counting only the distinct ones).

The product of its digits is 829440, while the sum is 45.

The square root of 648633825 is about 25468.2905786784. The cubic root of 648633825 is about 865.6317903172.

The spelling of 648633825 in words is "six hundred forty-eight million, six hundred thirty-three thousand, eight hundred twenty-five".