212210531425 has 24 divisors (see below), whose sum is σ = 263884003200. Its totient is φ = 169289668800.

The previous prime is 212210531411. The next prime is 212210531443. The reversal of 212210531425 is 524135012212.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-212210531425 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212210531393 and 212210531402.

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, 17461251 + ... + 17473399.

It is an arithmetic number, because the mean of its divisors is an integer number (10995166800).

Almost surely, 2^212210531425 is an apocalyptic number.

212210531425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

212210531425 is a deficient number, since it is larger than the sum of its proper divisors (51673471775).

212210531425 is a wasteful number, since it uses less digits than its factorization.

212210531425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14073 (or 14068 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 212210531425 its reverse (524135012212), we get a palindrome (736345543637).

The spelling of 212210531425 in words is "two hundred twelve billion, two hundred ten million, five hundred thirty-one thousand, four hundred twenty-five".