55220305425 has 24 divisors (see below), whose sum is σ = 94242658560. Its totient is φ = 28500801600.

The previous prime is 55220305379. The next prime is 55220305429. The reversal of 55220305425 is 52450302255.

It is not a de Polignac number, because 55220305425 - 2¹⁰ = 55220304401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55220305429) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11873010 + ... + 11877659.

It is an arithmetic number, because the mean of its divisors is an integer number (3926777440).

Almost surely, 2^55220305425 is an apocalyptic number.

It is an amenable number.

55220305425 is a deficient number, since it is larger than the sum of its proper divisors (39022353135).

55220305425 is a wasteful number, since it uses less digits than its factorization.

55220305425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23750713 (or 23750708 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 33.

The spelling of 55220305425 in words is "fifty-five billion, two hundred twenty million, three hundred five thousand, four hundred twenty-five".