212525418 has 16 divisors (see below), whose sum is σ = 485772480. Its totient is φ = 60721536.

The previous prime is 212525377. The next prime is 212525419. The reversal of 212525418 is 814525212.

212525418 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (212525419) 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, 2530023 + ... + 2530106.

It is an arithmetic number, because the mean of its divisors is an integer number (30360780).

Almost surely, 2^212525418 is an apocalyptic number.

212525418 is an abundant number, since it is smaller than the sum of its proper divisors (273247062).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212525418 is a wasteful number, since it uses less digits than its factorization.

212525418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5060141.

The product of its digits is 6400, while the sum is 30.

The square root of 212525418 is about 14578.2515412514. The cubic root of 212525418 is about 596.7653879216.

The spelling of 212525418 in words is "two hundred twelve million, five hundred twenty-five thousand, four hundred eighteen".