222159025 has 27 divisors (see below), whose sum is σ = 303918699. Its totient is φ = 160974000.

The previous prime is 222158999. The next prime is 222159029. The reversal of 222159025 is 520951222.

The square root of 222159025 is 14905.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 79977249 + 142181776 = 8943^2 + 11924^2 .

It is not a de Polignac number, because 222159025 - 2⁷ = 222158897 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222158984 and 222159002.

It is not an unprimeable number, because it can be changed into a prime (222159029) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 819640 + ... + 819910.

Almost surely, 2^222159025 is an apocalyptic number.

222159025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

222159025 is the 14905-th square number.

222159025 is the 7453-rd centered octagonal number.

It is an amenable number.

222159025 is a deficient number, since it is larger than the sum of its proper divisors (81759674).

222159025 is an equidigital number, since it uses as much as digits as its factorization.

222159025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574 (or 287 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

The cubic root of 222159025 is about 605.6494403465.

Multiplying 222159025 by its product of nonzero digits (3600), we get a square (799772490000 = 894300²).

The spelling of 222159025 in words is "two hundred twenty-two million, one hundred fifty-nine thousand, twenty-five".