55222025 has 24 divisors (see below), whose sum is σ = 70870464. Its totient is φ = 42660800.

The previous prime is 55222009. The next prime is 55222043. The reversal of 55222025 is 52022255.

It is a happy number.

55222025 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 55222025 - 2⁴ = 55222009 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 93782 + ... + 94368.

It is an arithmetic number, because the mean of its divisors is an integer number (2952936).

Almost surely, 2^55222025 is an apocalyptic number.

It is an amenable number.

55222025 is a deficient number, since it is larger than the sum of its proper divisors (15648439).

55222025 is a wasteful number, since it uses less digits than its factorization.

55222025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721 (or 716 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 23.

The square root of 55222025 is about 7431.1523332522. The cubic root of 55222025 is about 380.8062866205.

The spelling of 55222025 in words is "fifty-five million, two hundred twenty-two thousand, twenty-five".