36781225 has 12 divisors (see below), whose sum is σ = 49117516. Its totient is φ = 27161280.

The previous prime is 36781189. The next prime is 36781237. The reversal of 36781225 is 52218763.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 6487209 + 30294016 = 2547^2 + 5504^2 .

It is not a de Polignac number, because 36781225 - 2²⁵ = 3226793 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56262 + ... + 56911.

Almost surely, 2^36781225 is an apocalyptic number.

It is an amenable number.

36781225 is a deficient number, since it is larger than the sum of its proper divisors (12336291).

36781225 is a wasteful number, since it uses less digits than its factorization.

36781225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113196 (or 113191 counting only the distinct ones).

The product of its digits is 20160, while the sum is 34.

The square root of 36781225 is about 6064.7526742646. The cubic root of 36781225 is about 332.5641235365.

Adding to 36781225 its reverse (52218763), we get a palindrome (88999988).

The spelling of 36781225 in words is "thirty-six million, seven hundred eighty-one thousand, two hundred twenty-five".