206226025 has 6 divisors (see below), whose sum is σ = 255720302. Its totient is φ = 164980800.

The previous prime is 206226011. The next prime is 206226061. The reversal of 206226025 is 520622602.

It can be written as a sum of positive squares in 3 ways, for example, as 68773849 + 137452176 = 8293^2 + 11724^2 .

It is not a de Polignac number, because 206226025 - 2⁵ = 206225993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 8249041 = 206226025 / (2 + 0 + 6 + 2 + 2 + 6 + 0 + 2 + 5).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4124496 + ... + 4124545.

Almost surely, 2^206226025 is an apocalyptic number.

206226025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

206226025 is a deficient number, since it is larger than the sum of its proper divisors (49494277).

206226025 is an equidigital number, since it uses as much as digits as its factorization.

206226025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8249051 (or 8249046 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 206226025 is about 14360.5718897264. The cubic root of 206226025 is about 590.8099810647.

Adding to 206226025 its reverse (520622602), we get a palindrome (726848627).

The spelling of 206226025 in words is "two hundred six million, two hundred twenty-six thousand, twenty-five".