55385025 has 24 divisors (see below), whose sum is σ = 91794720. Its totient is φ = 29466240.

The previous prime is 55385023. The next prime is 55385039. The reversal of 55385025 is 52058355.

55385025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55385025 - 2¹ = 55385023 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55385023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45829 + ... + 47021.

It is an arithmetic number, because the mean of its divisors is an integer number (3824780).

Almost surely, 2^55385025 is an apocalyptic number.

It is an amenable number.

55385025 is a deficient number, since it is larger than the sum of its proper divisors (36409695).

55385025 is a wasteful number, since it uses less digits than its factorization.

55385025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1825 (or 1820 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 33.

The square root of 55385025 is about 7442.1115955084. Note that the first 3 decimals coincide. The cubic root of 55385025 is about 381.1805965217.

The spelling of 55385025 in words is "fifty-five million, three hundred eighty-five thousand, twenty-five".