212054525 has 12 divisors (see below), whose sum is σ = 272015700. Its totient is φ = 163793280.

The previous prime is 212054509. The next prime is 212054527. The reversal of 212054525 is 525450212.

It can be written as a sum of positive squares in 6 ways, for example, as 40627876 + 171426649 = 6374^2 + 13093^2 .

It is not a de Polignac number, because 212054525 - 2⁴ = 212054509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212054494 and 212054503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212054527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 145520 + ... + 146969.

It is an arithmetic number, because the mean of its divisors is an integer number (22667975).

Almost surely, 2^212054525 is an apocalyptic number.

212054525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

212054525 is a deficient number, since it is larger than the sum of its proper divisors (59961175).

212054525 is a wasteful number, since it uses less digits than its factorization.

212054525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292528 (or 292523 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 212054525 is about 14562.0920543719. The cubic root of 212054525 is about 596.3243105686.

The spelling of 212054525 in words is "two hundred twelve million, fifty-four thousand, five hundred twenty-five".