45131225 has 12 divisors (see below), whose sum is σ = 56375484. Its totient is φ = 35838720.

The previous prime is 45131197. The next prime is 45131227. The reversal of 45131225 is 52213154.

45131225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 26569 + 45104656 = 163^2 + 6716^2 .

It is not a de Polignac number, because 45131225 - 2⁶ = 45131161 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 45131225.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45131227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3164 + ... + 10013.

It is an arithmetic number, because the mean of its divisors is an integer number (4697957).

Almost surely, 2^45131225 is an apocalyptic number.

It is an amenable number.

45131225 is a deficient number, since it is larger than the sum of its proper divisors (11244259).

45131225 is a wasteful number, since it uses less digits than its factorization.

45131225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13324 (or 13319 counting only the distinct ones).

The product of its digits is 1200, while the sum is 23.

The square root of 45131225 is about 6717.9777463162. The cubic root of 45131225 is about 356.0347381201.

Adding to 45131225 its reverse (52213154), we get a palindrome (97344379).

The spelling of 45131225 in words is "forty-five million, one hundred thirty-one thousand, two hundred twenty-five".