211163225 has 48 divisors (see below), whose sum is σ = 325812480. Its totient is φ = 132192000.

The previous prime is 211163221. The next prime is 211163237. The reversal of 211163225 is 522361112.

It is not a de Polignac number, because 211163225 - 2² = 211163221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 211163225.

It is not an unprimeable number, because it can be changed into a prime (211163221) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 229316 + ... + 230234.

It is an arithmetic number, because the mean of its divisors is an integer number (6787760).

Almost surely, 2^211163225 is an apocalyptic number.

211163225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

211163225 is a deficient number, since it is larger than the sum of its proper divisors (114649255).

211163225 is a wasteful number, since it uses less digits than its factorization.

211163225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1050 (or 1045 counting only the distinct ones).

The product of its digits is 720, while the sum is 23.

The square root of 211163225 is about 14531.4563963837. The cubic root of 211163225 is about 595.4876542609.

The spelling of 211163225 in words is "two hundred eleven million, one hundred sixty-three thousand, two hundred twenty-five".