990425530 has 16 divisors (see below), whose sum is σ = 1783126944. Its totient is φ = 396090000.

The previous prime is 990425477. The next prime is 990425533. The reversal of 990425530 is 35524099.

990425530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 990425530.

It is not an unprimeable number, because it can be changed into a prime (990425533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82405 + ... + 93655.

It is an arithmetic number, because the mean of its divisors is an integer number (111445434).

Almost surely, 2^990425530 is an apocalyptic number.

990425530 is a deficient number, since it is larger than the sum of its proper divisors (792701414).

990425530 is a wasteful number, since it uses less digits than its factorization.

990425530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20061.

The product of its (nonzero) digits is 48600, while the sum is 37.

The square root of 990425530 is about 31471.0268342169. The cubic root of 990425530 is about 996.7982698645.

The spelling of 990425530 in words is "nine hundred ninety million, four hundred twenty-five thousand, five hundred thirty".