212124523225 has 12 divisors (see below), whose sum is σ = 263659206700. Its totient is φ = 169296523200.

The previous prime is 212124523183. The next prime is 212124523253. The reversal of 212124523225 is 522325421212.

It can be written as a sum of positive squares in 6 ways, for example, as 90844371216 + 121280152009 = 301404^2 + 348253^2 .

It is not a de Polignac number, because 212124523225 - 2²⁷ = 211990305497 is a prime.

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, 10066650 + ... + 10087699.

Almost surely, 2^212124523225 is an apocalyptic number.

212124523225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

212124523225 is a deficient number, since it is larger than the sum of its proper divisors (51534683475).

212124523225 is a wasteful number, since it uses less digits than its factorization.

212124523225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20154780 (or 20154775 counting only the distinct ones).

The product of its digits is 19200, while the sum is 31.

Adding to 212124523225 its reverse (522325421212), we get a palindrome (734449944437).

The spelling of 212124523225 in words is "two hundred twelve billion, one hundred twenty-four million, five hundred twenty-three thousand, two hundred twenty-five".