55425347989 has 4 divisors (see below), whose sum is σ = 60464016000. Its totient is φ = 50386679980.

The previous prime is 55425347969. The next prime is 55425348007. The reversal of 55425347989 is 98974352455.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55425347989 - 2⁹ = 55425347477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55425347969) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2519333989 + ... + 2519334010.

It is an arithmetic number, because the mean of its divisors is an integer number (15116004000).

Almost surely, 2^55425347989 is an apocalyptic number.

It is an amenable number.

55425347989 is a deficient number, since it is larger than the sum of its proper divisors (5038668011).

55425347989 is a wasteful number, since it uses less digits than its factorization.

55425347989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5038668010.

The product of its digits is 54432000, while the sum is 61.

The spelling of 55425347989 in words is "fifty-five billion, four hundred twenty-five million, three hundred forty-seven thousand, nine hundred eighty-nine".