214431425 has 18 divisors (see below), whose sum is σ = 287927442. Its totient is φ = 158346240.

The previous prime is 214431389. The next prime is 214431479. The reversal of 214431425 is 524134412.

It can be written as a sum of positive squares in 9 ways, for example, as 83740801 + 130690624 = 9151^2 + 11432^2 .

It is not a de Polignac number, because 214431425 - 2⁶ = 214431361 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 214431394 and 214431403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 21152 + ... + 29601.

It is an arithmetic number, because the mean of its divisors is an integer number (15995969).

Almost surely, 2^214431425 is an apocalyptic number.

214431425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

214431425 is a deficient number, since it is larger than the sum of its proper divisors (73496017).

214431425 is a wasteful number, since it uses less digits than its factorization.

214431425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50789 (or 50771 counting only the distinct ones).

The product of its digits is 3840, while the sum is 26.

The square root of 214431425 is about 14643.4772168362. The cubic root of 214431425 is about 598.5440857879.

Adding to 214431425 its reverse (524134412), we get a palindrome (738565837).

The spelling of 214431425 in words is "two hundred fourteen million, four hundred thirty-one thousand, four hundred twenty-five".