206887425 has 12 divisors (see below), whose sum is σ = 342054000. Its totient is φ = 110339920.

The previous prime is 206887423. The next prime is 206887427. The reversal of 206887425 is 524788602.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (206887423) and next prime (206887427).

It is not a de Polignac number, because 206887425 - 2¹ = 206887423 is a prime.

It is not an unprimeable number, because it can be changed into a prime (206887423) 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 11 ways as a sum of consecutive naturals, for example, 1379175 + ... + 1379324.

It is an arithmetic number, because the mean of its divisors is an integer number (28504500).

Almost surely, 2^206887425 is an apocalyptic number.

206887425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

206887425 is a deficient number, since it is larger than the sum of its proper divisors (135166575).

206887425 is a wasteful number, since it uses less digits than its factorization.

206887425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2758512 (or 2758507 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 42.

The square root of 206887425 is about 14383.5817861894. The cubic root of 206887425 is about 591.4409145579.

The spelling of 206887425 in words is "two hundred six million, eight hundred eighty-seven thousand, four hundred twenty-five".