449228025 has 63 divisors (see below), whose sum is σ = 840535581. Its totient is φ = 238062240.

The previous prime is 449228023. The next prime is 449228047. The reversal of 449228025 is 520822944.

The square root of 449228025 is 21195.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 54331641 + 394896384 = 7371^2 + 19872^2 .

It is not a de Polignac number, because 449228025 - 2¹ = 449228023 is a prime.

It is not an unprimeable number, because it can be changed into a prime (449228023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 62 ways as a sum of consecutive naturals, for example, 2861247 + ... + 2861403.

Almost surely, 2^449228025 is an apocalyptic number.

449228025 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

449228025 is the 21195-th square number.

449228025 is the 10598-th centered octagonal number.

It is an amenable number.

449228025 is a deficient number, since it is larger than the sum of its proper divisors (391307556).

449228025 is an frugal number, since it uses more digits than its factorization.

449228025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342 (or 165 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The cubic root of 449228025 is about 765.8709802993.

Multiplying 449228025 by its sum of digits (36), we get a square (16172208900 = 127170²).

The spelling of 449228025 in words is "four hundred forty-nine million, two hundred twenty-eight thousand, twenty-five".