199875257 has 2 divisors, whose sum is σ = 199875258. Its totient is φ = 199875256.

The previous prime is 199875233. The next prime is 199875281. The reversal of 199875257 is 752578991.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (199875233) and next prime (199875281).

It can be written as a sum of positive squares in only one way, i.e., 199685161 + 190096 = 14131^2 + 436^2 .

It is a cyclic number.

It is not a de Polignac number, because 199875257 - 2¹⁴ = 199858873 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 199875199 and 199875208.

It is not a weakly prime, because it can be changed into another prime (199875217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99937628 + 99937629.

It is an arithmetic number, because the mean of its divisors is an integer number (99937629).

Almost surely, 2^199875257 is an apocalyptic number.

It is an amenable number.

199875257 is a deficient number, since it is larger than the sum of its proper divisors (1).

199875257 is an equidigital number, since it uses as much as digits as its factorization.

199875257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1587600, while the sum is 53.

The square root of 199875257 is about 14137.7246047587. The cubic root of 199875257 is about 584.6819387744.

The spelling of 199875257 in words is "one hundred ninety-nine million, eight hundred seventy-five thousand, two hundred fifty-seven".