440370225 has 27 divisors (see below), whose sum is σ = 789316203. Its totient is φ = 234696240.

The previous prime is 440370211. The next prime is 440370241. The reversal of 440370225 is 522073044.

The square root of 440370225 is 20985.

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., 158533281 + 281836944 = 12591^2 + 16788^2 .

It is a de Polignac number, because none of the positive numbers 2^k-440370225 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 314076 + ... + 315474.

Almost surely, 2^440370225 is an apocalyptic number.

440370225 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

440370225 is the 20985-th square number.

440370225 is the 10493-rd centered octagonal number.

It is an amenable number.

440370225 is a deficient number, since it is larger than the sum of its proper divisors (348945978).

440370225 is an equidigital number, since it uses as much as digits as its factorization.

440370225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2814 (or 1407 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The cubic root of 440370225 is about 760.8037578140.

The spelling of 440370225 in words is "four hundred forty million, three hundred seventy thousand, two hundred twenty-five".