199960625 has 10 divisors (see below), whose sum is σ = 249871578. Its totient is φ = 159968000.

The previous prime is 199960601. The next prime is 199960639. The reversal of 199960625 is 526069991.

199960625 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 129937201 + 70023424 = 11399^2 + 8368^2 .

It is not a de Polignac number, because 199960625 - 2¹² = 199956529 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 199960625.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 159344 + ... + 160593.

Almost surely, 2^199960625 is an apocalyptic number.

It is an amenable number.

199960625 is a deficient number, since it is larger than the sum of its proper divisors (49910953).

199960625 is an frugal number, since it uses more digits than its factorization.

199960625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319957 (or 319942 counting only the distinct ones).

The product of its (nonzero) digits is 262440, while the sum is 47.

The square root of 199960625 is about 14140.7434387305. The cubic root of 199960625 is about 584.7651673909.

The spelling of 199960625 in words is "one hundred ninety-nine million, nine hundred sixty thousand, six hundred twenty-five".