55255625 has 20 divisors (see below), whose sum is σ = 69540240. Its totient is φ = 43890000.

The previous prime is 55255621. The next prime is 55255649. The reversal of 55255625 is 52655255.

It is not a de Polignac number, because 55255625 - 2² = 55255621 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55255621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 131666 + ... + 132084.

It is an arithmetic number, because the mean of its divisors is an integer number (3477012).

Almost surely, 2^55255625 is an apocalyptic number.

It is an amenable number.

55255625 is a deficient number, since it is larger than the sum of its proper divisors (14284615).

55255625 is an equidigital number, since it uses as much as digits as its factorization.

55255625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650 (or 635 counting only the distinct ones).

The product of its digits is 75000, while the sum is 35.

The square root of 55255625 is about 7433.4127424757. The cubic root of 55255625 is about 380.8835051882.

The spelling of 55255625 in words is "fifty-five million, two hundred fifty-five thousand, six hundred twenty-five".