199705625 has 30 divisors (see below), whose sum is σ = 290339874. Its totient is φ = 136920000.

The previous prime is 199705603. The next prime is 199705651. The reversal of 199705625 is 526507991.

It is a happy number.

199705625 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 5 ways, for example, as 33269824 + 166435801 = 5768^2 + 12901^2 .

It is not a de Polignac number, because 199705625 - 2⁸ = 199705369 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 27365 + ... + 33885.

Almost surely, 2^199705625 is an apocalyptic number.

It is an amenable number.

199705625 is a deficient number, since it is larger than the sum of its proper divisors (90634249).

199705625 is an frugal number, since it uses more digits than its factorization.

199705625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6555 (or 6533 counting only the distinct ones).

The product of its (nonzero) digits is 170100, while the sum is 44.

The square root of 199705625 is about 14131.7240632557. The cubic root of 199705625 is about 584.5164875170.

The spelling of 199705625 in words is "one hundred ninety-nine million, seven hundred five thousand, six hundred twenty-five".