211225469 has 8 divisors (see below), whose sum is σ = 259969920. Its totient is φ = 167123376.

The previous prime is 211225457. The next prime is 211225471. The reversal of 211225469 is 964522112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-211225469 is a prime.

It is a super-2 number, since 2×211225469² = 89232397508539922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211225409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1160489 + ... + 1160670.

It is an arithmetic number, because the mean of its divisors is an integer number (32496240).

Almost surely, 2^211225469 is an apocalyptic number.

It is an amenable number.

211225469 is a deficient number, since it is larger than the sum of its proper divisors (48744451).

211225469 is a wasteful number, since it uses less digits than its factorization.

211225469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2321179.

The product of its digits is 8640, while the sum is 32.

The square root of 211225469 is about 14533.5979371937. The cubic root of 211225469 is about 595.5461585960.

The spelling of 211225469 in words is "two hundred eleven million, two hundred twenty-five thousand, four hundred sixty-nine".