212636425 has 12 divisors (see below), whose sum is σ = 279179676. Its totient is φ = 160102400.

The previous prime is 212636401. The next prime is 212636441. The reversal of 212636425 is 524636212.

It can be written as a sum of positive squares in 6 ways, for example, as 6110784 + 206525641 = 2472^2 + 14371^2 .

It is not a de Polignac number, because 212636425 - 2⁷ = 212636297 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 249736 + ... + 250585.

It is an arithmetic number, because the mean of its divisors is an integer number (23264973).

Almost surely, 2^212636425 is an apocalyptic number.

212636425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

212636425 is a deficient number, since it is larger than the sum of its proper divisors (66543251).

212636425 is a wasteful number, since it uses less digits than its factorization.

212636425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500348 (or 500343 counting only the distinct ones).

The product of its digits is 17280, while the sum is 31.

The square root of 212636425 is about 14582.0583252160. The cubic root of 212636425 is about 596.8692713466.

The spelling of 212636425 in words is "two hundred twelve million, six hundred thirty-six thousand, four hundred twenty-five".