423990825 has 12 divisors (see below), whose sum is σ = 700998288. Its totient is φ = 226128400.

The previous prime is 423990823. The next prime is 423990851. The reversal of 423990825 is 528099324.

It is not a de Polignac number, because 423990825 - 2¹ = 423990823 is a prime.

It is not an unprimeable number, because it can be changed into a prime (423990823) 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 11 ways as a sum of consecutive naturals, for example, 2826531 + ... + 2826680.

It is an arithmetic number, because the mean of its divisors is an integer number (58416524).

Almost surely, 2^423990825 is an apocalyptic number.

It is an amenable number.

423990825 is a deficient number, since it is larger than the sum of its proper divisors (277007463).

423990825 is a wasteful number, since it uses less digits than its factorization.

423990825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5653224 (or 5653219 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 423990825 is about 20591.0374920741. The cubic root of 423990825 is about 751.2517319495.

The spelling of 423990825 in words is "four hundred twenty-three million, nine hundred ninety thousand, eight hundred twenty-five".