212425279 has 4 divisors (see below), whose sum is σ = 231736680. Its totient is φ = 193113880.

The previous prime is 212425271. The next prime is 212425307. The reversal of 212425279 is 972524212.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 212425279 - 2³ = 212425271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212425271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9655684 + ... + 9655705.

It is an arithmetic number, because the mean of its divisors is an integer number (57934170).

Almost surely, 2^212425279 is an apocalyptic number.

212425279 is a deficient number, since it is larger than the sum of its proper divisors (19311401).

212425279 is a wasteful number, since it uses less digits than its factorization.

212425279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19311400.

The product of its digits is 20160, while the sum is 34.

The square root of 212425279 is about 14574.8166026197. The cubic root of 212425279 is about 596.6716440326.

The spelling of 212425279 in words is "two hundred twelve million, four hundred twenty-five thousand, two hundred seventy-nine".