211345125 has 16 divisors (see below), whose sum is σ = 351678912. Its totient is φ = 112717200.

The previous prime is 211345117. The next prime is 211345153. The reversal of 211345125 is 521543112.

It is a happy number.

It is not a de Polignac number, because 211345125 - 2³ = 211345117 is a prime.

It is a super-2 number, since 2×211345125² = 89333523722531250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211345095 and 211345104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 281419 + ... + 282168.

It is an arithmetic number, because the mean of its divisors is an integer number (21979932).

Almost surely, 2^211345125 is an apocalyptic number.

211345125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

211345125 is a deficient number, since it is larger than the sum of its proper divisors (140333787).

211345125 is an equidigital number, since it uses as much as digits as its factorization.

211345125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563605 (or 563595 counting only the distinct ones).

The product of its digits is 1200, while the sum is 24.

The square root of 211345125 is about 14537.7138849270. The cubic root of 211345125 is about 595.6585933002.

Adding to 211345125 its reverse (521543112), we get a palindrome (732888237).

The spelling of 211345125 in words is "two hundred eleven million, three hundred forty-five thousand, one hundred twenty-five".