222009725 has 12 divisors (see below), whose sum is σ = 314619744. Its totient is φ = 152235120.

The previous prime is 222009721. The next prime is 222009727. The reversal of 222009725 is 527900222.

It is not a de Polignac number, because 222009725 - 2² = 222009721 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222009721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 634139 + ... + 634488.

It is an arithmetic number, because the mean of its divisors is an integer number (26218312).

Almost surely, 2^222009725 is an apocalyptic number.

222009725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

222009725 is a deficient number, since it is larger than the sum of its proper divisors (92610019).

222009725 is a wasteful number, since it uses less digits than its factorization.

222009725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1268644 (or 1268639 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 222009725 is about 14899.9907718092. The cubic root of 222009725 is about 605.5137361663.

Adding to 222009725 its reverse (527900222), we get a palindrome (749909947).

The spelling of 222009725 in words is "two hundred twenty-two million, nine thousand, seven hundred twenty-five".