214645625 has 10 divisors (see below), whose sum is σ = 268221954. Its totient is φ = 171716000.

The previous prime is 214645597. The next prime is 214645631. The reversal of 214645625 is 526546412.

It can be written as a sum of positive squares in 5 ways, for example, as 146797456 + 67848169 = 12116^2 + 8237^2 .

It is not a de Polignac number, because 214645625 - 2¹⁴ = 214629241 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 (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 171092 + ... + 172341.

Almost surely, 2^214645625 is an apocalyptic number.

214645625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

214645625 is a deficient number, since it is larger than the sum of its proper divisors (53576329).

214645625 is an frugal number, since it uses more digits than its factorization.

214645625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343453 (or 343438 counting only the distinct ones).

The product of its digits is 57600, while the sum is 35.

The square root of 214645625 is about 14650.7892278880. The cubic root of 214645625 is about 598.7433188324.

The spelling of 214645625 in words is "two hundred fourteen million, six hundred forty-five thousand, six hundred twenty-five".