36531225 has 36 divisors (see below), whose sum is σ = 65809900. Its totient is φ = 19370880.

The previous prime is 36531221. The next prime is 36531227. The reversal of 36531225 is 52213563.

36531225 is a `hidden beast` number, since 3 + 653 + 1 + 2 + 2 + 5 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 278784 + 36252441 = 528^2 + 6021^2 .

It is not a de Polignac number, because 36531225 - 2² = 36531221 is a prime.

It is a zygodrome in base 5.

It is not an unprimeable number, because it can be changed into a prime (36531221) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 51171 + ... + 51879.

Almost surely, 2^36531225 is an apocalyptic number.

It is an amenable number.

36531225 is a deficient number, since it is larger than the sum of its proper divisors (29278675).

36531225 is a wasteful number, since it uses less digits than its factorization.

36531225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 954 (or 946 counting only the distinct ones).

The product of its digits is 5400, while the sum is 27.

The square root of 36531225 is about 6044.1066337384. The cubic root of 36531225 is about 331.8089364921.

Adding to 36531225 its reverse (52213563), we get a palindrome (88744788).

The spelling of 36531225 in words is "thirty-six million, five hundred thirty-one thousand, two hundred twenty-five".