212922259225 has 81 divisors (see below), whose sum is σ = 296710964919. Its totient is φ = 151498339200.

The previous prime is 212922259223. The next prime is 212922259261. The reversal of 212922259225 is 522952229212.

The square root of 212922259225 is 461435.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 13 ways, for example, as 109060439049 + 103861820176 = 330243^2 + 322276^2 .

It is not a de Polignac number, because 212922259225 - 2¹ = 212922259223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212922259223) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 929791411 + ... + 929791639.

Almost surely, 2^212922259225 is an apocalyptic number.

212922259225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

212922259225 is the 461435-th square number.

212922259225 is the 230718-th centered octagonal number.

It is an amenable number.

212922259225 is a deficient number, since it is larger than the sum of its proper divisors (83788705694).

212922259225 is an equidigital number, since it uses as much as digits as its factorization.

212922259225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556 (or 278 counting only the distinct ones).

The product of its digits is 259200, while the sum is 43.

The spelling of 212922259225 in words is "two hundred twelve billion, nine hundred twenty-two million, two hundred fifty-nine thousand, two hundred twenty-five".