206164133025 has 24 divisors (see below), whose sum is σ = 341028455520. Its totient is φ = 109899229440.

The previous prime is 206164133023. The next prime is 206164133027. The reversal of 206164133025 is 520331461602.

It is an interprime number because it is at equal distance from previous prime (206164133023) and next prime (206164133027).

It is not a de Polignac number, because 206164133025 - 2¹ = 206164133023 is a prime.

It is not an unprimeable number, because it can be changed into a prime (206164133023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 535960 + ... + 836409.

It is an arithmetic number, because the mean of its divisors is an integer number (14209518980).

Almost surely, 2^206164133025 is an apocalyptic number.

206164133025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

206164133025 is a deficient number, since it is larger than the sum of its proper divisors (134864322495).

206164133025 is a wasteful number, since it uses less digits than its factorization.

206164133025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1374385 (or 1374380 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 33.

Adding to 206164133025 its reverse (520331461602), we get a palindrome (726495594627).

The spelling of 206164133025 in words is "two hundred six billion, one hundred sixty-four million, one hundred thirty-three thousand, twenty-five".