222420825 has 36 divisors (see below), whose sum is σ = 434601648. Its totient is φ = 107839200.

The previous prime is 222420799. The next prime is 222420829. The reversal of 222420825 is 528024222.

It is not a de Polignac number, because 222420825 - 2⁶ = 222420761 is a prime.

It is not an unprimeable number, because it can be changed into a prime (222420829) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 42459 + ... + 47408.

It is an arithmetic number, because the mean of its divisors is an integer number (12072268).

Almost surely, 2^222420825 is an apocalyptic number.

222420825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

222420825 is a deficient number, since it is larger than the sum of its proper divisors (212180823).

222420825 is a wasteful number, since it uses less digits than its factorization.

222420825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89894 (or 89886 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

The square root of 222420825 is about 14913.7797020071. The cubic root of 222420825 is about 605.8872531481.

The spelling of 222420825 in words is "two hundred twenty-two million, four hundred twenty thousand, eight hundred twenty-five".