222720265 has 4 divisors (see below), whose sum is σ = 267264324. Its totient is φ = 178176208.

The previous prime is 222720259. The next prime is 222720271. The reversal of 222720265 is 562027222.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (222720259) and next prime (222720271).

It can be written as a sum of positive squares in 2 ways, for example, as 77951241 + 144769024 = 8829^2 + 12032^2 .

It is a cyclic number.

It is not a de Polignac number, because 222720265 - 2⁵ = 222720233 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22272022 + ... + 22272031.

It is an arithmetic number, because the mean of its divisors is an integer number (66816081).

Almost surely, 2^222720265 is an apocalyptic number.

It is an amenable number.

222720265 is a deficient number, since it is larger than the sum of its proper divisors (44544059).

222720265 is an equidigital number, since it uses as much as digits as its factorization.

222720265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44544058.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 222720265 is about 14923.8153633714. The cubic root of 222720265 is about 606.1590285435.

Adding to 222720265 its reverse (562027222), we get a palindrome (784747487).

The spelling of 222720265 in words is "two hundred twenty-two million, seven hundred twenty thousand, two hundred sixty-five".