206625351 has 4 divisors (see below), whose sum is σ = 275500472. Its totient is φ = 137750232.

The previous prime is 206625347. The next prime is 206625379. The reversal of 206625351 is 153526602.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 206625351 - 2² = 206625347 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206625311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34437556 + ... + 34437561.

It is an arithmetic number, because the mean of its divisors is an integer number (68875118).

Almost surely, 2^206625351 is an apocalyptic number.

206625351 is a deficient number, since it is larger than the sum of its proper divisors (68875121).

206625351 is an equidigital number, since it uses as much as digits as its factorization.

206625351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68875120.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 206625351 is about 14374.4687206171. The cubic root of 206625351 is about 591.1910737222.

It can be divided in two parts, 2066253 and 51, that multiplied together give a triangular number (105378903 = T₁₄₅₁₇).

The spelling of 206625351 in words is "two hundred six million, six hundred twenty-five thousand, three hundred fifty-one".