208225538 has 8 divisors (see below), whose sum is σ = 312900732. Its totient is φ = 103925296.

The previous prime is 208225519. The next prime is 208225553. The reversal of 208225538 is 835522802.

It can be written as a sum of positive squares in 2 ways, for example, as 207158449 + 1067089 = 14393^2 + 1033^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 208225498 and 208225507.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92345 + ... + 94572.

Almost surely, 2^208225538 is an apocalyptic number.

208225538 is a deficient number, since it is larger than the sum of its proper divisors (104675194).

208225538 is a wasteful number, since it uses less digits than its factorization.

208225538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187476.

The product of its (nonzero) digits is 38400, while the sum is 35.

The square root of 208225538 is about 14430.0221067052. The cubic root of 208225538 is about 592.7132887091.

The spelling of 208225538 in words is "two hundred eight million, two hundred twenty-five thousand, five hundred thirty-eight".