206312005525 has 24 divisors (see below), whose sum is σ = 275316144264. Its totient is φ = 152794214400.

The previous prime is 206312005511. The next prime is 206312005541. The reversal of 206312005525 is 525500213602.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 56010795556 + 150301209969 = 236666^2 + 387687^2 .

It is not a de Polignac number, because 206312005525 - 2¹⁹ = 206311481237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3953092 + ... + 4004941.

It is an arithmetic number, because the mean of its divisors is an integer number (11471506011).

Almost surely, 2^206312005525 is an apocalyptic number.

206312005525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

206312005525 is a deficient number, since it is larger than the sum of its proper divisors (69004138739).

206312005525 is a wasteful number, since it uses less digits than its factorization.

206312005525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7958121 (or 7958116 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 31.

The spelling of 206312005525 in words is "two hundred six billion, three hundred twelve million, five thousand, five hundred twenty-five".