211848025 has 27 divisors (see below), whose sum is σ = 273100669. Its totient is φ = 163016000.

The previous prime is 211847983. The next prime is 211848029. The reversal of 211848025 is 520848112.

The square root of 211848025 is 14555.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 89170249 + 122677776 = 9443^2 + 11076^2 .

It is not a de Polignac number, because 211848025 - 2⁹ = 211847513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211848029) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 2983740 + ... + 2983810.

Almost surely, 2^211848025 is an apocalyptic number.

211848025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

211848025 is the 14555-th square number.

211848025 is the 7278-th centered octagonal number.

It is an amenable number.

211848025 is a deficient number, since it is larger than the sum of its proper divisors (61252644).

211848025 is an frugal number, since it uses more digits than its factorization.

211848025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234 (or 117 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 31.

The cubic root of 211848025 is about 596.1306796088.

The spelling of 211848025 in words is "two hundred eleven million, eight hundred forty-eight thousand, twenty-five".