55320430425 has 72 divisors (see below), whose sum is σ = 99248272704. Its totient is φ = 27177396480.

The previous prime is 55320430423. The next prime is 55320430433. The reversal of 55320430425 is 52403402355.

It is a happy number.

It is not a de Polignac number, because 55320430425 - 2¹ = 55320430423 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55320430423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 6371187 + ... + 6379863.

It is an arithmetic number, because the mean of its divisors is an integer number (1378448232).

Almost surely, 2^55320430425 is an apocalyptic number.

It is an amenable number.

55320430425 is a deficient number, since it is larger than the sum of its proper divisors (43927842279).

55320430425 is a wasteful number, since it uses less digits than its factorization.

55320430425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9219 (or 9201 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 33.

The spelling of 55320430425 in words is "fifty-five billion, three hundred twenty million, four hundred thirty thousand, four hundred twenty-five".