1766272225 has 6 divisors (see below), whose sum is σ = 2190177590. Its totient is φ = 1413017760.

The previous prime is 1766272201. The next prime is 1766272237. The reversal of 1766272225 is 5222726671.

It can be written as a sum of positive squares in 3 ways, for example, as 4875264 + 1761396961 = 2208^2 + 41969^2 .

It is not a de Polignac number, because 1766272225 - 2¹³ = 1766264033 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 35325420 + ... + 35325469.

Almost surely, 2^1766272225 is an apocalyptic number.

It is an amenable number.

1766272225 is a deficient number, since it is larger than the sum of its proper divisors (423905365).

1766272225 is an equidigital number, since it uses as much as digits as its factorization.

1766272225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70650899 (or 70650894 counting only the distinct ones).

The product of its digits is 141120, while the sum is 40.

The square root of 1766272225 is about 42027.0415922891. The cubic root of 1766272225 is about 1208.7946982812.

Adding to 1766272225 its reverse (5222726671), we get a palindrome (6988998896).

The spelling of 1766272225 in words is "one billion, seven hundred sixty-six million, two hundred seventy-two thousand, two hundred twenty-five".