244390625 has 14 divisors (see below), whose sum is σ = 305503902. Its totient is φ = 195500000.

The previous prime is 244390613. The next prime is 244390633. The reversal of 244390625 is 526093442.

It can be written as a sum of positive squares in 7 ways, for example, as 219069601 + 25321024 = 14801^2 + 5032^2 .

It is not a de Polignac number, because 244390625 - 2¹⁶ = 244325089 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 13 ways as a sum of consecutive naturals, for example, 7805 + ... + 23445.

Almost surely, 2^244390625 is an apocalyptic number.

244390625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

244390625 is a deficient number, since it is larger than the sum of its proper divisors (61113277).

244390625 is an frugal number, since it uses more digits than its factorization.

244390625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15671 (or 15646 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 244390625 is about 15632.9979530479. The cubic root of 244390625 is about 625.2132605570.

The spelling of 244390625 in words is "two hundred forty-four million, three hundred ninety thousand, six hundred twenty-five".