648825384426 has 32 divisors (see below), whose sum is σ = 1321594591680. Its totient is φ = 212295323136.

The previous prime is 648825384421. The next prime is 648825384439. The reversal of 648825384426 is 624483528846.

It is a self number, because there is not a number n which added to its sum of digits gives 648825384426.

It is not an unprimeable number, because it can be changed into a prime (648825384421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1113991 + ... + 1593306.

It is an arithmetic number, because the mean of its divisors is an integer number (41299830990).

Almost surely, 2^648825384426 is an apocalyptic number.

648825384426 is an abundant number, since it is smaller than the sum of its proper divisors (672769207254).

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

648825384426 is a wasteful number, since it uses less digits than its factorization.

648825384426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2708038.

The product of its digits is 70778880, while the sum is 60.

The spelling of 648825384426 in words is "six hundred forty-eight billion, eight hundred twenty-five million, three hundred eighty-four thousand, four hundred twenty-six".