212214425 has 24 divisors (see below), whose sum is σ = 274761432. Its totient is φ = 162432000.

The previous prime is 212214407. The next prime is 212214449. The reversal of 212214425 is 524412212.

It can be written as a sum of positive squares in 12 ways, for example, as 74926336 + 137288089 = 8656^2 + 11717^2 .

It is not a de Polignac number, because 212214425 - 2¹² = 212210329 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212214425.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 54545 + ... + 58305.

It is an arithmetic number, because the mean of its divisors is an integer number (11448393).

Almost surely, 2^212214425 is an apocalyptic number.

212214425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

212214425 is a deficient number, since it is larger than the sum of its proper divisors (62547007).

212214425 is a wasteful number, since it uses less digits than its factorization.

212214425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3869 (or 3864 counting only the distinct ones).

The product of its digits is 1280, while the sum is 23.

The square root of 212214425 is about 14567.5813023302. The cubic root of 212214425 is about 596.4741592934.

Adding to 212214425 its reverse (524412212), we get a palindrome (736626637).

The spelling of 212214425 in words is "two hundred twelve million, two hundred fourteen thousand, four hundred twenty-five".